AMSOIL’s Ultimate Performance

Just like 4k TV’s are vastly superior to the 1980’s 19″ CRT TV’s that our parents or grandparents had in their living room, purpose-built synthetic lubricants are also vastly superior to petroleum oils through superior design and advanced technologies. Vehicle OEM’s, petroleum oil companies, and quick-lube chains all want you to use 40-year-old paper filter technology and underground fossil-oil lubricants for just one reason: profits. They don’t want you to know about the BEST SYNTHETIC oils, or synthetic nanofiber technology filters, because they can triple vehicle mileage life, use 87% less motor oil, and use 2-10% less fuel.Is your motor oil devoted to engine protection?

They also don’t want you to understand when you should be changing your transmission fluid, differential oil and power steering fluid. Not keeping these three greatest vehicle maintenance secrets would cost those companies billions of dollars that they pull out of consumer’s pockets.  TRUTH: using modern technology and better maintenance has tremendous benefits to you, to our environment, and to conservation of our natural resources.

We could recommend/sell anyone’s oil and filter products. But after hundreds of hours of engineering investigation we realized that one product line is the undisputed innovator and benchmark in performance and value. We decided that YOU DESERVE TO KNOW the facts about filter technology, synthetic engine oil, gear lube, transmission fluid and other synthetic lubricants. So we leave out the engineering complexities and explain modern synthetic oil and filter technologies so that everyone can understand how to use those advantages, and can stop being deceived by marketing professionals. What is the best engine oil?


No exceptions.   No close competitors.

(We’ve been proving it for years, we’ve answered the toughest AMSOIL skeptics, and we have even shown how AMSOIL beats Michael Phelps credentialed performance by a huge margin.)

AMSOIL oils, fluids, filters and fuel additives for cars, trucks, snowmobiles, marine watercraft, farming, construction, offroad and racing applications

AMSOIL’s 25k mile / 1-year oil and filter changes are very real side benefits of superior technology, and they make AMSOIL the cheapest solution for most annual maintenance costs.  But, you don’t have to extend your drain intervals. You can still take full advantage of the 75-90% wear-rate reductions and 2-10% fuel economy improvements that world-class synthetic lubrication and filtration engineering delivers, without extending your drain intervals at all.

The stark truth is that typical proper oil change intervals with petroleum oil are 5,000 to 10,000 miles, but 15,000 to 25,000 miles with most of AMSOIL’s synthetic engine oils when you use their nanofiber oil filters. Yes, that means that 3000 mile oil changes are from fraudulent marketing, and many people have publicly said so, including the state of California.

Our Ultimate Synthetic Total Solution with AMSOIL lubes and nanofiber filters is an Environmental “win-win” that provides maximum fuel economy & performance and is CHEAPER annually than standard oil changes.

Secret #1:  If your oil has not broken down, and the additive package is still robust, and the wear particles are being filtered out, then changing your engine oil gives you no benefits.  (However, the money from your pocket does benefit the corporate profits of oil and filter companies, and companies providing oil change services.)

“Are you impressed with another company’s oil or filter?  Don’t be fooled by NASCAR race-car advertising contracts with cool graphics and beautiful women – those cars don’t run on Via-gra, and neither does yours!  What’s ON the car is advertising, but what’s IN over 90% of those cars is AMSOIL lubricants.  In most racing circuits, from Snocross to Champ-boat to Supercross or TORC racing, the winner’s circles are dominated by AMSOIL-lubricated machines.”

Brian Dobben – former Chrysler headquarters Sr Engineer

Amsoil Research Orange Dragstrip Car

Secret #2:  AMSOIL has decades of independent testing data proving they offer the world’s best-performing lubricants. The U.S. Patent and Trademark office agreed, approving AMSOIL’s trademark “The First in Synthetics” without any objections from the oil companies. It’s not surprising, because AMSOIL has been in business since 1972 and was the first company in the world to develop an API-rated (American Petroleum Institute) synthetic lubricant for automotive applications. AMSOIL coined the phrase “extended drain intervals” over 30 years ago with 25,000 mile drain intervals, and ever since then they have been constantly re-defining the leading edge of lubrication technology, innovation and performance. No-one else offers 25,000 mile oils. And no-one else backs their products with a performance guarantee.

In addition, AMSOIL is the ONLY company to offer fully comprehensive high-performance solutions for vehicle maintenance, combining the world’s longest extended-oil-drain intervals with exclusive industry-leading products such as 25k mile nanofiber oil filters, 100k mile air filters, and long-life fuel filters. And they aren’t just engine oil and filter innovators. In fact, AMSOIL has introduced a dozen “firsts” since 1970 – more performance innovations than any company in the lubrication industry.

In every case we can remember, AMSOIL’s synthetic lube and filter products provide best-technology solutions that far exceed OEM specifications while simultaneously meeting all of the toughest relevant OEM specs such as BMW, Mercedes and Porsche, and outclassing the best competitive synthetic oils. No other product line can touch the formidable performance, the long championship pedigree, and the constantly improving technology.  AMSOIL products ARE the Benchmarks for performance and value, and that’s why we recommend AMSOIL products so strongly. (See how to pick the best engine oil, for more details.)


The Non-Accidental Championship History of AMSOIL’s Formidable Performance:

Al Amatuzio’s Passionate Dream

AMSOIL’s History and Excellence Explained in one great, short video!

More about AMSOIL’s Excellence and Amazing History



As they told Neo in The Matrix, “buckle your seatbelt Dorothy, ’cause Kansas is goin’ bye-bye!

AMSOIL engine oils are intensely engineered to perform at such a high world-class level that they are guaranteed to still reliably continue to meet good design performance standards at long 15k and 25k mile intervals.  If ANY other motor oil is factually higher performance, more protective, or more durable than AMSOIL, then

  1. where is their published battery of ASTM test data results, and
  2. why do they recommend shorter drain intervals, and
  3. why don’t they guarantee their performance at all, for any drain interval?

The stark reality is that in nearly all cases the “better than AMSOIL” claims are not backed by a single one of those three!  Isn’t that called “three strikes and you’re out”?

The equivalent would be a group of high-school swimmers showing up at Olympic team trials, boasting that they’re as fast or faster than Michael Phelps, but not a single one can back their bragging with a certified race time, not a single one is willing to bet money and then race the clock, and none of them claims to race further than 50 meters max.  This analogy is so realistic in fact, that I wrote an article to explain how Phelps’ gold medals prove AMSOIL’s dominance.  Like Michael Phelps wanna-be’s, competitive AMSOIL pretenders have long been bluffing and spouting hot air – but when it’s time to post data, they are nowhere to be found.

“Superior technology is never produced by marketing slogans, and it’s not accidental – it’s carefully engineered.”

Brian Dobben – former Chrysler headquarters Sr Engineer

AMSOIL 75% better protection against wear and horsepower loss

AMSOIL United States and Canada the Filtration and Lubrication Gold Standards

Take our Ultimate Synthetic Oil Challenge:

(We DARE you!)

First, Bookmark this site!

Next, Pick any other oil or filter brand.  Then, search that competitor’s oil or filtration website for ASTM test data that supports their claims and catchy marketing slogans.

  • Notice how their data is skimpy, irrelevant, incomplete or invisible – like Mobil 1’s “comparison” to AMSOIL.
  • Notice that they don’t list both Efficiency AND the Micron test size (making it meaningless). Or do they list a 4-ball Wear Test scar size, but not the temperature and Kg force applied or the actual ASTM test series used ? (A lower temperature and/or Kg force will produce a smaller wear-scar size.)
  • Notice that they provide little or no comparison test data which actually names the other oils tested: not naming actual products makes the data useless to you, and legally it’s absolutely meaningless.

Then, return here, and compare their data to the extensive AMSOIL performance data (from independent certified test labs) that we openly provide without fear. (Click on the study on the right.)ASTM Test Study of Synthetic 5W-30 Motor Oils

Sure, there are a few small-volume synthetic oil brands out there in the market. Most of them are excellent products that are superior to petroleum oils, which has naturally earned them a small but loyal following. However, they don’t claim 25k mile drain intervals, they don’t offer high-performance filtration products, and they don’t warrant their product performance.

And on performance, you may be hard pressed to find actual ASTM test data on those other synthetic lubrication products unless AMSOIL provides the data. Why? One reason is because their formulations and/or additive-package-components are 5 to 30 years old. Or they use cheap, detrimental gimmicks like adding “Moly” to engine oil, as a marketing substitute for true technical performance. In comparison, AMSOIL synthetic products are constantly re-engineered using the latest technologies, to always provide the best synthetic oil performance possible.

Other synthetic oils may compete on price, but we can’t find one to seriously compete on performance or annual maintenance costs. We firmly believe that AMSOIL synthetic lubricants and filter products ARE the best & smartest choice – and we back up our opinion with hard data!

Have questions? Visit our FAQ’s.

Have deeper questions?  Visit our skeptic’s Q&A.

If you have another question, please .

Brian Dobben – BSMET




Q:  BUT, how can you know that AMSOIL’s test data is honest and true?

Great question. Easy answer. In addition to printed brochures and test-data reports, AMSOIL has often included the ASTM data right on product labels and packaging boxes listing the major brands by name on the charts (rather than “competitor A, B, C”). AMSOIL has been paying certified independent labs to do those tests for DECADES, and the published data is prosecutable as fraud and/or false-advertising if it’s false, and AMSOIL’s competition also does regular product testing. Yet for over 30 years no-one has EVER challenged the accuracy of AMSOIL’s data. Instead, AMSOIL’s competitors don’t publish their test results, and don’t discuss their performance compared to AMSOIL products…

even when Mobil 1 was asked for test data comparing Mobil 1 to Amsoil, they avoided answering the question.  Who knows how many thousands of times they have been asked, but since October 16, 2006, the best public response they can offer is to distract the question with data showing how they perform against petroleum oils?

We think that’s a revealing reality-check. Don’t you?


Q:  BUT, didn’t AMSOIL invent these tests?

Absolutely not. (LOL!) AMSOIL regularly publishes standard SAE/ASTM/API test data, but because very few lubrication companies publish any performance test data besides AMSOIL, some people assume that AMSOIL invented the very ASTM tests which are used globally by the entire lubrication industry.  The deafening silence of the petroleum lubrication industry about their actual ASTM-tested product performance is ridiculous!

(AMSOIL did invent and publish a “pound-out test” for heavy-equipment offroad grease, because there was no available ASTM test that addressed a way to assess the grease pound-out performance that is needed so badly in off-road construction equipment such as bulldozers, backhoes and loaders.)


Q:  Where do ASTM tests come from?

These tests are the lubrication industry’s standard performance tests, which have been painstakingly developed over decades by the ASTM through the cooperation of the three governing engineering bodies: the ASTM (formerly the American Society for Testing and Materials), the Society of Automotive Engineers (SAE) and the American Petroleum Institute (API). The first two are worldwide engineering societies, and the third is mainly made up of engineers from the big international petroleum companies. The API also offers oil manufacturers an optional Trademarked-symbol system to have oil performance Certified by the ASTM tests to the minimum SAE requirements, but the tests are still performed by independent labs.

The SAE is made up mainly of automotive/truck OEM engineers, and they established the Service Grades as the way for OEMs to clearly define the minimum lubrication performance that’s required for them to avoid warranty failures and/or angry customers.

The ASTM tests themselves are used not only to determine if performance is adequate to meet the SAE Service Grades, but to measure that performance.  They were devised and refined in order to get accurate indicators of lubricant performance in “real world” use.  They are the same ASTM tests that the API and other international companies use, and all ASTM tests have been “standardized” so that the measurements will be accurately duplicated anywhere in the world by any laboratory that follows the test protocols using calibrated equipment.  So the measurement data from the ASTM tests are quite valuable in developing and identifying high performance lubrication characteristics.
Become an AMSOIL Preferred Customer to save up to 25 percent, earn points, get exclusive promotions, and win free gear

What about real performance in real vehicles?

That’s what it’s all about! Imagine this real-life result: you have a new 1999 Chevy Express van that you own and drive for expedited-delivery hauling of up to 3500 lb loads, and with 68,000 miles on it you change all the drivetrain fluids and lubricants over to AMSOIL and go to 25,000 mile oil changes and 150,000 mile transmission ATF fluid changes. Now imagine that you put 110,000 to 120,000 miles a year on it, troublefree until the engine quit at 930,000 miles, and after swapout of the barely-worn engine the original transmission is still going strong at over 1.2 million miles without any repair or overhaul.   Here’s the 5.7L engine teardown report. That’s real life performance. (Here are the seven key lessons from the Million Mile Van.)

The real question is this: How long do you want YOUR vehicle to last?

More specifically, how long do you want your engine to last, your transmission to last, your differential to last, or your steering and suspension components to last?  Even among fleet professionals, very few know the three key auto-industry insider secrets to vehicle maintenance, yet every vehicle can benefit greatly from them.


Bobby Unser:  (3-time Indy 500 Winner, 35 overall Indy Car wins, & 13-time Pikes Peak Hill Climb Winner.)

During AMSOIL’s 30th anniversary convention in the summer of 2003, Bobby Unser got up on stage and told about how his race car differentials could not survive more than one race up Pikes Peak without needing to be rebuilt… until he started using AMSOIL. Then his differentials went all race season without needing to be rebuilt. This experience in Bobby’s early years of racing began his long relationship with AMSOIL in all his race cars.

Bobby went on to say that:

AMSOIL is the Best Lubricant made, the Standard to which all others are judged.”   – Bobby Unser


We value your desire to learn and to make wise choices in caring for your vehicles and equipment. And we love to help.  So whenever you ask questions or request information, we respect your privacy and will not share your e-mail address or personal information with anyone else, except as needed to assist your special requests.

Under no circumstances do we ever sell or trade your e-mail address or other contact information – period.


AMSOIL Lubricants Proven the Best Synthetic Oils !

AMSOIL is “The First in Synthetics” and also the first in quality, protection and performance. That trademark is enlightening, because the U.S. Patent and Trademark Officials stated that by claiming that AMSOIL was the first historically, that AMSOIL was also insinuating to be the best (or #1/first) from a quality or performance standpoint. On that basis, they planned to deny granting the trademark.  But AMSOIL showed the government officials comparison documentation and test-data backing up the claim that AMSOIL was also the best.

The Patent Office reviewed and agreed with the data.  So the process went to the next step, and every other oil company in the world was given the chance to object because AMSOIL had applied for trademark rights to “The First in Synthetics”.  Yet after the government officials notified all other oil manufacturers that AMSOIL was claiming to be the best oil, and waiting 90 days, not a single competitor had objected!  Not a peep from any of them!  I can guarantee you that if any of these competitors and major oil companies had a product better than AMSOIL, they would have objected.

In fact, Mr. A.J. Amatuzio, founder, President and CEO of AMSOIL states that he often hears other companies ad slogans stating that their products are the best. They are not.

AMSOIL or Mobil 1 – Which is the better oil?

Mobil 1 has run the tag line for their advertising “nothing outperforms Mobil 1”.

A.J. Amatuzio states that he knows a company that does make products that outperform Mobil 1: “And you know which company that is. Mobil makes a very good oil, but I am here to tell you that that it does not outperform AMSOIL Synthetic Motor Oils. They can come out with advertising buzz words to market their oils, but in the final analysis, buzz words don’t add one thing to their products’ performance. The only reason that AMSOIL has continued to grow and prosper competing with large corporations like Mobil is that AMSOIL products have consistently performed better.”

Study these AMSOIL vs. Mobil 1 results in the global standard ASTM lubrication tests that all oil manufacturers and OEM’s use. These are independent certified lab test results performed by an ASTM (American Society of Testing and Materials) accredited test laboratory.   Now, after reading these test results do you still believe Mobil’s tag line “nothing outperforms Mobil 1”? The data certainly doesn’t show that, and every executive can tell you that if this published data was not 100% accurate that Mobil’s attorneys would certainly be acting.

In fact, so many people wonder what Mobil 1 has to say about AMSOIL’s long history of published performance data that Exxon-Mobil’s official website devotes a complete webpage to a user’s direct question and request for data, asking whether Mobil 1 or Amsoil is a better oil. They published this frequent question on their own website with a dedicated page, and optimized that page for “Amsoil” search traffic.  The Mobil 1 user, Greg Galbreath, closes with this plea in 2006:

“AMSOIL claims of 25,000 miles with fleet testing gets me thinking maybe I should change to AMSOIL. Your honest reply citing professional standards used would be appreciated by many of the public (i.e., ASTM). I really would like to know who has the best protection and why. Your reply is greatly appreciated.

Isn’t his request pointed and clear?  It is used by Exxon-Mobil to represent probably thousands of similar questions they have received.  But notice and consider their response, carefully.  Their 4-sentance marketing answer in 2006 completely avoids Greg’s question, links to a taxicab fleet video talking about how much better Mobil 1 is than regular petroleum oil, and gives no comparative data for AMSOIL, at all.  None. Zero. And a November 2015 search on their website shows that there is still no other information on AMSOIL.

Since October 16, 2006, the best public response Exxon-Mobil can offer is to distract their audience with irrelevant data showing how they perform against petroleum oils?  Notice their official response is not an engineering response: “distracting” or mis-directing the audience is the primary technique a magician or illusionist uses to control the audience’s perception and prevent them from understanding what is actually happening. (It’s not hard to make test data disappear when you only thought you saw it!)

Why the marketing sleight-of-hand?  Why would Exxon-Mobil have avoided answering this important and frequent decades-old question, and why would they not legally challenge AMSOIL for any of the decades of dozens of boldly published ASTM test results, unless of course… Amsoil’s published data is true?

The logically inescapable conclusion:

Since AMSOIL’s test data is totally accurate and irrefutable, and Exxon-Mobil knows it and has verified it with their own testing, and since they are unwilling to create a better-performing product which could actually compete against AMSOIL… a marketing bait-and-switch ploy is the best response they can create.


Save up to 25 percent and get exclusive offers as an AMSOIL Preferred Customer PLUS exclusive help from a former OEM headquarters senior engineer

Did you know that average petroleum motor oils have a much lower film strength than synthetic motor oils?  In fact, the general rule of thumb in lubrication engineering is that synthetic base-stocks have seven to ten times the shear strength of petroleum oils.  So in “dry start” conditions and drivetrain shock-loads (like pot-holes and railroad tracks), synthetics will automatically ensure far less wear damage in everyday driving.

AMSOIL synthetic oil does not break down, shear apart or lose viscosity under heat and stress. Petroleum motor oil easily breaks down under heat and stress and leaves carbon, varnish and sludge deposits in your engine, allowing your critical engine components to wear much more rapidly. It’s no wonder you have to change it every 3k to 7k miles. Of course, your local quick-lube or dealership service center can’t wait to see you again to charge you more of your hard earned money!

In a Lubricants World Magazine interview the president of Jiffy Lube International (owned by Penzoil-Quaker State), Marc Graham states that if they can get customers to shorten their drain intervals by 100 miles it would mean an additional $20 million in revenue for the company per year and if they can get consumers to do one more oil change per year it would mean $294 million for the oil change alone and $441 million in revenue when they include ancillary products and services that go along with the oil change. In fact, Graham openly admits that the bottom line is profits. This is why the quick-lube industry pushes 3,000 mile oil changes. The shorter the drain interval, the more money Jiffy Lube and Penzoil-Quaker State make. With statements like this it sure appears that they don’t care about your vehicle and selling you a quality extended-drain-interval synthetic like AMSOIL. All they want is to see the same customer over and over again, as often as possible!

Isn’t it about time you learned the truth??

Don’t think that OEM vehicle and equipment manufacturers and other oil companies don’t know about AMSOIL’s superiority. They certainly do. Most have tested and analyzed it, and quietly discussed the embarrassing superiority of AMSOIL in small, privileged management groups before concluding that competing with or recommending AMSOIL’s performance did not fit their business model.

As a former automotive OEM senior engineer, I understand that many key engineers in the automotive industry are afraid of professional backlash in their careers – and some have been relentlessly abused by their managers to make them examples for daring to take a stand, or even for stating the facts.

We are going to tell you the truth because we feel a moral obligation to tell you, and because you deserve to know the same facts that we know.  We are here to completely turn the petroleum oil industry upside down by exposing the myth of the “3000 mile oil change”, revealing the three greatest insider secrets in automotive maintenance, and explaining how to pick the best motor oil for your engine, one customer at a time.

Savvy consumers are very smart and have the tools and technology available to do their own research and seek out the facts that can deliver the best vehicle care. We are here to help you achieve that goal, and created this ultimate vehicle maintenance page to help you do that with any vehicle or equipment you use. We are extremely proud of our products and our technical competency to help you get the answers you need…fast and accurately.

Read about our integrity and purpose.


What about racing with AMSOIL synthetic lubricants?

In many racing segments, like CORR, Snocross, Champ Boat Offshore and Motocross, Amsoil-lubricated engines dominate.  Consider these famous racers:

Scheuring Speed Sports owner Steve Scheuring also attributes his team’s Championship Snocross performance to AMSOIL DOMINATOR (TDR) synthetic 2-cycle oil, explaining that they don’t need competitive 32:1 racing mixes because when AMSOIL is mixed 50:1 “it’s bulletproof. It allows better action in our motor because we’ve got more fuel going in there. It gives us that extra edge.”

AMSOIL Snowmobile Racing


Erik Buell attributes his EBR Superbike success to AMSOIL, calling them “the best synthetic lubricants in the world”, and adding that “crankshafts last the entire season and [wet] clutch plates last four or five race weekends, which is just crazy good”. “AMSOIL has helped us solve problems with the engines… we’re not only finding good oil, but really good research people. “Racing is research” is real.”

The 11-time World Champion Scott Douglas echos similar praise for AMSOIL’s contributions to his pro 4×4 off-road wins, running AMSOIL engine oil, transmission fluid, and gear lube. “The dedication to the perfection of the product is what’s really inviting as well because a lot of companies make products, but their marketing is the big thing; they don’t focus as much on the products themselves, whereas at AMSOIL the dedication to the perfection of the product is number one, marketing second.”


Here’s a huge racing secret: We know of many major racers including NASCAR and Indy racing teams that use AMSOIL lubricants in their race cars – while the oil sponsor’s logo on the hood and quarter panels is NOT what is in their vehicle! The sponsor pays them to keep quiet (and legally requires it in their advertising or “sponsor” contract) so that you’ll assume it’s their oils used in the car, and the same oil YOU can buy… but they’re NOT. Fact is, every successful major race car in the world uses synthetics, which AMSOIL pioneered in the United States in the face of petroleum company products before Mobil 1 existed.

The last 5-10 years has seen a shift in top NASCAR and Formula 1 where some teams using synthetic custom-engineered laboratory engine oils that are radically tuned for their engines, in order to gain an extra 2 to 5 more horsepower. But prior to this, a very large percentage of Formula 1 teams used the same AMSOIL synthetic racing engine oils that you can buy – because AMSOIL outperformed the famous brands “racing” oils. Still today, AMSOIL Dominator oils dominate NASCAR in differentials and gearboxes. We know who many of these racing teams are/were, but are not permitted to advertise their identities (“non-disclosure” agreements) because a large amount of money was at stake with their sponsors wanting to create the public belief that they are using the sponsors’ brand of oil that is advertised on the car.

Synthetic oil has always been used in every commercial and military jet engine in the world, as well as in all spacecraft. That’s because synthetic oil outperforms petroleum oil in every criteria at high temperature extremes, low temperature extremes, and everywhere in between.  Experts have agreed for decades that synthetic oil excels in all applications!

I’m about to tell you one of the biggest secrets in the automotive world – a valuable secret. How would you like to triple the remaining mileage life of your vehicles, while saving $ on fuel and routine maintenance, for FREE?  As a former Senior OEM automotive engineer, I can show you how.

Brian Dobben – BSMET

Our fully comprehensive total maintenance solution gives you:

  • The best performance, highest fuel economy, and longest vehicle life of any approach on the market, combining the best synthetic lubrication technology with the best filtration technology. See how it produced the Million Mile Van, and consider the seven lessons from the Million Mile Van.
  • Much less time in the shop (or under your vehicle): most vehicles running 25k miles/yr, or less, need only ONE motor oil & filter change & chassis lube in an entire year !  (You don’t have to shorten your oil change intervals any more than you want to, but if you dislike the risks of having someone else change your oil and would rather do it yourself while benefiting your vehicle and still saving time and money, AMSOIL’s approach is ideal.)
  • At least triple the remaining life of your engine. Per extensive OEM testing that was reported in SAE Technical Paper #881825, the documented 70% reduction in engine wear rates that was proven in the 1980’s was finally enabled by AMSOIL in 2006 with special filters using nanofiber technology from the military and medical industries.

Nanofiber overlay on cellulose air filter media

See info on nanofiber Ea AIR Filters

See info on nanofiber Ea OIL Filters

Download FREE tech guide on nanofiber engine oil and air filter benefits

Providing a vehicle lubrication solution with far less environmental impact, AMSOIL synthetic motor oils use an estimated 87% less oil and 2-10% less fuel. And you get ALL THAT at a cheaper annual cost than what you probably spend now on lubrication and filter maintenance, even before you count the fuel-cost savings !  So you get best-in-the-world synthetic performance & protection, you genuinely help the environment and conserve the earth’s crude oil supply, AND it costs you LESS time and LESS money.

Can we fill YOUR need for superior lubricants and filters to lower your costs in maintenance, repairs and capital depreciation? Yes, we can: gasoline, diesel, 2-stroke, 4-stroke, greases, transmissions & differentials, in tractors, RV’s, trucks, cars, buses, motorcycles, boats, personal watercraft, snowmobiles, chainsaws, lawnmowers, hydraulic units, industrial compressors, gear boxes, and more. There’s a 95% chance that we can outperform your current lube & filter products and bring you overall savings at the same time, whether personal, commercial, fleet, racing or industrial, turbo or supercharged.

“Maximum performance and cost effectiveness are obtained when one looks beyond marketing claims and selects a product based on the data that supports it.” Alan Amatuzio

If you want to buy AMSOIL Products, visit our vehicle maintenance page, or the AMSOIL On-Line Store or download a clickable pdf e-catalog

AMSOIL – the First In History and In Quality
Over 40 years of Firsts demonstrate Innovation and Leadership

  • First to develop an API rated 100% synthetic motor oil.
  • First to introduce the concept of extended drain intervals, with a recommended 25,000-mile/12-month drain interval.
  • First to produce synthetic motor oils for diesel engines.
  • First to produce synthetic motor oils for racing engines.
  • First to produce synthetic motor oils for turbo engines.
  • First to produce synthetic motor oils for marine engines.
  • First to manufacture synthetic gear lube for automotive use.
  • First to manufacture a 100:1 pre-mix synthetic 2-cycle oil.
  • First to manufacture a synthetic automatic transmission fluid for automotive use.


AMSOIL is proudly made in the U.S.A.

AMSOIL is privately owned by patriotic Americans


AMSOIL – “Our Company makes the Best Lubricants in the world, period, and challenges anyone or any company to prove us wrong! That won’t happen because our competitors know it’s true.”       J. Amatuzio, President and CEO.

How Does AMSOIL Compare Against Other Major Oil Brand’s Synthetics?


AMSOIL protects turbochargers 3 to 4 times better than Royal Purple and Mobil 1, and had ZERO LSPI events in GM’s dexos1®Gen 2, the auto-industry’s best available engine test as of Sept 2018.

We’ve not found a single one that even comes close to providing the wear protection that AMSOIL synthetic oil does!  After the last decade of opportunities with many new “synthetics” and some real synthetics introduced to the market, even the latest independent ASTM testing in the now-crowded 5W-30 synthetic engine oil market still shows weak competition against AMSOIL’s superior performance.

The superior performance is exceptional, but NOT new.  AMSOIL has a long testing history across both consumer and racing products.  For example, the graphs on the back of AMSOIL’s Series 2000 20W-50 Racing Oil or the Series 2000 0W-30 Severe Service Oil proclaimed these results to the world:

  • The 20W-50 Mobil 1 Tri-Synthetic leaves a wear scar over 2 times that of the AMSOIL (0.440 mm for AMSOIL vs. 0.922 mm for Mobil 1)!
  • Same thing goes for Havoline Formula 3 (0.713), Valvoline Synthetic (0.741), Castrol Syntec (0.757), Quaker State (0.790, synthetic blend).
  • The Mobil 1 Tri-Synthetic 0W-30 leaves a wear scar over 1.6 times that of the AMSOIL 0W-30 (0.373 for AMSOIL and 0.607 for Mobil 1)!
  • Same thing goes for Penzoil 5W-30 at 0.540, Castrol Syntec 5W-50 at 0.576, Mobil 1 5W-30 at 0.589 and Quaker State 4×4 10W-30 Synthetic Blend at 0.595.

Mobil Supersyn was a big marketing push, a new high-performance oil, yet the independent lab test data showed that Mobil Supersyn did not compare to AMSOIL’s extended drain interval 25,000 mile/1-year oil.  The test data was as follows for AMSOIL 5W-30 vs. Mobil Supersyn 5W-30:




Mobil Supersyn 5W-30


ASTM Testing Summary

(This Archive Data is for historic example.

View Most Recent Test Data)


                                         AMSOIL       Supersyn

NOACK Volatility:        4.90%             9.17%

Flash Point:              446 deg. F.      435 deg. F.

Fire Point:                 471 deg. F.     455 deg. F.

Pour Point:               – 60 deg. F.      -54 deg. F.

4-Ball Wear Test:       0.40 mm          0.60 mm

TBN (Total Base No.):  12.355             8.45



Mobil will not recommend or guarantee 25k mile/1-year drain intervals like AMSOIL 0W-30, 5W-30, 10W-30 or 10W-40 Synthetic Motor Oils. No-where on the Mobil bottle or the Exxon-Mobil website does Mobil 1 claim 25,000 miles/1-year.

AMSOIL is proven to be the best by the standardized industry tests! AMSOIL was, and still is, the “First in Synthetics”. All other synthetic motor oils came later. This is a lubrication-industry fact that NO oil company will dispute. As to the question of being #1 in quality, they’ve never challenged that fact either. {See Full ASTM test results against Mobil 1 and other synthetic oils.}

The bare truth is that up until about 2001, these petroleum manufacturers never even offered a synthetic (except Mobil1). In fact, they they had always stayed busy trying to debunk the benefits of synthetics to the average consumer! Now, technology, competition and consumer demand has forced every major oil manufacturer to have a synthetic, so they are now claiming the same benefits that at one time they were trying to debunk. They also claim their re-defined petroleum “synthetics” offer true synthetic performance – claims which are still considered fraud in most countries outside the United States. Yet not a single one comes close to offering the protection and performance that AMSOIL does – and they don’t want to.

In fact, most new “synthetics” now on the market are merely Group III hydrocracked oils – the oil-drilling “version” of a synthetic. And “synthetic blends” are oils that include enough Group III base-stock to enable passing the required SAE Service Grade tests with old Group II petroleum oil.  For example, Castrol Syntec isn’t even a 100% pure Group 4 synthetic! That’s right… read on……..

“Maximum performance and cost effectiveness are obtained when one looks beyond marketing claims and selects a product based on the data that supports it.”  Alan Amatuzio


Mobil accused Castrol of false advertising after Castrol reformulated its’ synthetic by substituting other basestocks in place of its synthetic polyalphaolefins (PAO’s). Castrol Syntec is now a hydrocracked oil, but still claims to be a “full synthetic”.

That’s right, Castrol replaced Syntec’s PAO synthetic base stock with a hydroisomerized “Group III” petroleum base stock.

Hydrocracking, as it’s called, is the highest level of petroleum refining. Syntec isn’t even a true synthetic yet Castrol ended up winning the battle when the National Advertising Division of the Council of Better Business Bureaus ruled that Castrol could still market its oil as “synthetic” despite their new formulation and huge new profit margin.

How can they do that? Basically, the Big Oil companies advised the BBB that the legal definition of synthetics should be “expanded” to include Group III hydroprocessed petroleum oil. That’s illegal in every country except the United States. But this high profile case was decided against consumers because synthetics are recognized as the market’s best hope for growth in profit margins. Synthetic oil sales growth has outpaced petroleum oil sales by a wide margin and the gap continues to widen every year. Consumers were getting smarter and demanding the best for their vehicles, so the petroleum industry agreed on the classic “bait and switch” tactic by quietly redefining “synthetic oil”! Although this deception is unethical, it’s unfortunately legal, and much too profitable for the petroleum companies to permit it being corrected.

Additionally, soon after Castrol won this battle, several other major oil companies jumped in and came up with hydroprocessed motor oils of their own and labeled these products to be “100% synthetic”, when they are still primarily Group III hydroprocessed petroleum oils!


Typical advantages of AMSOIL synthetic motor oils and filters:

  • Save time and money with extended oil drains;
  • boost fuel economy 2-10%;
  • lower operating temperatures;
  • reduce engine and component wear by over 70%;
  • triple the remaining life of your lubricated mechanical systems & components.


In nearly every case, AMSOIL‘s synthetic lube and filter products provide best-technology solutions that far exceed OEM specifications. And they provide optimum solutions considering the three greatest automotive insider secrets for vehicle maintenance.  That is why we recommend AMSOIL products.

Don’t forget to be a hero, because an opportunity this big is rare!  Post and share this information with your friends, and tell them about Preferred Customer membership that lets them buy at wholesale and get it shipped to their door – they’ll owe you big-time, and will always respect you for it.  How do we know?  Because AMSOIL has one of the highest customer-loyalties of any group of products in the world, and 75% of AMSOIL dealers took that step because of their stunning experiences as AMSOIL users.

One of the most common comments from the hundreds of thousands of AMSOIL customers: “I wish I had known about AMSOIL years ago!”

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UltimateSyntheticOil promotes the AMSOIL Filtration and Lubrication Gold Standards in the United States and Canada If you want to buy AMSOIL Products, visit our vehicle maintenance page, or the AMSOIL On-Line Store or download a clickable pdf e-catalog