In this case, it is more than the "marketing legal" language. M1 ATF simply does not contain the specified baseoil and additive package required by DC to make it eligible for ATF+4 certification.quote:
I don't know ..but the whole thing appears to be "marketing legal" language ..and nothing to do with the substrata of the product.
andquote:
I agree. I'm sure XOM has done extensive internal testing and is satisfied that Mobil 1 is perfectly suitable for Chrysler transmissions that require ATF+4. But now that "real" ATF+4 is finally available (Valvoline seems to be the first to get theirs to market, but others will follow), I can see no reason to choose Mobil 1 ATF over ATF+4.
So they developed it. How does this mean that XOM isn't using those additives? The use of those products would still not warrant the affixing of the +4 trademark if they were not licensed to sell the product under that recommendation.quote:
Lubrizol developed a shear-stable VI improver specifically for ATF+4. The initial tests of this VI improver in the test fluids was so remarkable that Chrysler modified the then current ATF+3 spec (MS7176D) to include it. Thus Type 7176E fluid was born, which remained the factory fill until the introduction of ATF+4. In testing done during development of ATF+4, Chrysler noted the following viscosity loss from shearing for the following ATFs (20 hour KRL Shear Test):
True, but I'm sure XOM could obtain the necessary licensing for marketing if they were indeed interested in brewing the ATF+4 product with the required components.quote:
License to manufacture doesn't mean license to market.
Again, how do you know this? You've just figured that out on your own.quote:
The point is, that while XOM may be using some of the components of a true ATF+4 licensed fluid, the M1 ATF does not contain ALL of the needed components to make the fluid even eligible for ATF+4 licensing. This of course, does not mean that M1 ATF cannot perform correctly in an ATF+4 application though, it just isn't "the real thing."
Logically tell me how you know this to be the casequote:
Logically, if one of the components is missing from the product, then how would it meet the specification?![]()
Bingo. To carry the ATF+4 label, Chrysler requires the blend be comprised of a specific "recipe" which stipulates all the ingredients and NO substitutes are allowed.quote:
Originally posted by The Critic:
Logically, if one of the components is missing from the product, then how would it meet the specification?![]()