Originally Posted By: fdcg27
Originally Posted By: ARCOgraphite
Originally Posted By: Koz1
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However, our work on automobile engines and jet engine designs has shown that polyalphaolefins (PAOs) offer the best all-around performance for gasoline engines due to their: ...
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So that's why mobil switched to primary slack wax process group iii+ similar to shell xhvi?
OTOH, we no longer use them exclusively due to cost, and the SOPUS Grp IIIs are not inferior in any way in actual use?
HAHAHA! Puts the whole lawsuit against Castrol in prospective does it not?
Also to the OP when it comes to PCMO'S the whole package is more valuable then the individual parts. Meaning it is far more important how a PCMO is formulated with basestocks, additives, viscosity improves, and additive carriers. Also each group of basestocks have different effects on different materials that make up your car engine. So in short there are many right and wrong answers to this question and it is up to you to get there. Also some folks will provide MSDS, VOA'S, UOA'S, and other factors to determine what will work for you, so just use the best judgement that will allow you to sleep well at night.