AMSOIL and Dexos Compliance – and AMSOIL EA nanofiber oil filters

Is AMSOIL engine oil Dexos compliant? What about AMSOIL EA oil filter performance differences and warranty requirements?  A customer recently asked me these questions.
Just bought my wife a new “17 Yukon Denali with a 6.2 liter V-8 requiring Dexos compliant 0-20. 
Question #1: Is Amsoil Signature Series 0 – 20  GM Dexos compliant from a warranty perspective? (My GMC dealer was not able to answer this question but has assured me that Signature 15-40 is warranty compliant for my ’17 L-5 Duramax).
Yes, it is.  AMSOIL fully covers any warranty issue (unlike any other oil manufacturer), and the reality is that there never are oil-related warranty problems when you use a highly-engineered, dramatically superior lubricant.
Dexos is a licensing certification program that GM put together for a number of reasons, and hundreds of oils are on their licensed list because they use the same several pre-approved additive packages.  While all AMSOIL engine oils recommended for LSPI-sensitive engines do meet Dexos requirements, these AMSOIL synthetics are not in the Dexos licensed list of oils.  AMSOIL formulates their own packages for maximum technology protection and performance,  rather than maximum profits at minimum performance requirements.  One reason they don’t do licensing programs is because of the frequency of their formulation improvements (3 to 10x more often than everybody else): AMSOIL’s business model has always been to deliver the maximum protection and performance that technology will permit, and they are always raising the performance bar higher by creating or selecting new molecular constructions with superior performance.
The key concern for all the OEM’s is the rapid and extensive engine damage that can occur from LSPI, and this has become a central purpose for pushing Dexos.  The risk of engine damage in these TDGI turbocharged engines is very concerning because many, many oils on the market provide little or no protection against LSPI.  The problem the OEM’s face is that the relentless speed of the yearly fuel economy increases mandated/coerced by Obama’s car-czar doesn’t allow oil development to keep pace with increasingly severe engine technology demands. The oil industry has been trying to put together a new or revised SAE service grade to cover LSPI requirements, but the OEM’s need to avoid fuel economy tax penalties can’t wait for the completion of this project. Several OEMs including Ford, GM and Caterpillar have published supplemental oil specifications to fill this gap as a protection against warranty claims from LSPI damage.  
10 years ago, no-one would have dreamed that ignition timing would be advanced to such a hairline level that oil formulations would need to help prevent Low Speed Pre-Ignition.  AMSOIL’s oil formulations which are recommended for these advanced-timing engines not only pass all the industry’s LSPI tests, but they do it with ZERO occurrence of LSPI against the typical 5 events that are permitted during the testing.  In other words, AMSOIL engine oils are in the very highest performance category, still providing maximum protection against every type of engine damage, and boasting a 75% reduction in engine wear rates vs standard industry benchmark performance requirements.  What this means is that in every new wave of OEM engine designs, AMSOIL is already far ahead of performance and does not suffer failures due to unidentified additional oil stresses in new engine designs.  There is no better protection than AMSOIL Signature Series oils.  
  
Question #2: Same ? relative to the Amsoil recommended oil filter Absolute Efficiency Oil Filter  EAO17-EA fo the 6.2 liter gas.
When you use an EA oil filter, AMSOIL’s nanofiber technology automatically reduces engine wear rates about 50-70% vs standard filters. There is no better choice for protection, and the 1-year/15k mile life of an EA15k or 1-year/25k mile life of an EAO filter is unmatched in the market: the construction of the filter is absolutely premium in every aspect, including the most expensive gasket used on any automotive oil filter.  The HNBR gasket cost is about 10x that of standard filters, but fully seals with less effort/pressure, does not harden with high temp exposure, and as long as it is lubricated with an oil film when installed, it never freezes/sticks on the engine.
FYI, I think it’s still true that not a single OEM publishes any specification for engine air or oil filter performance.  It’s also important to realize that nearly all oil filters are constructed with wood-fiber-media held together by resins that begin breaking down after six months exposure to engine oil chemicals.
  This has been the case since the beginning of spin-on oil filters, and is another reason I highly recommend using AMSOIL oil filters for 1-year oil change intervals or any interval longer than 6 months. 

Question #3: What is the difference between the following Amsoil oil filters – Absolute Efficiency for my 6.2 liter gas and 25,000 Mile EA for my L-5 Duramax?
The first filter is an EAO17, and the 2nd is an EAO52.  In both cases, you get EA nanofiber filtering efficiency of 98.7 percent at 20 microns, vs standard filter efficiencies as low as 51%.  You also get good filtering at 15 microns:  it’s been known since the published 1980’s GM research that 15 micron filtration provided a 70% wear-rate reduction from standard cellulose filter media (the primary filter media today is still cellulose paper). 
The performance difference is the amount of filtration media surface area, which is driven by filter size, as well as the designed flow pressure for bypass valve opening.  In many vehicles, OEM’s are shifting to even smaller oil filters as one piece of the puzzle in reducing vehicle weight and engine compartment size, to aid in higher fuel economy. The filter performance is identical, but the EAO17 is smaller than the EAO52. 
EA15K oil filters have the “15K” designation to show their 15,000 mile rating: these filters have a lot less media due to their physically small size, meaning they don’t have as much particle capacity before the bypass valve is diverting more oil around the filter than generally preferred by industry.  

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