Quote:
Originally Posted by RX_Renesis
is mobil 1 a true synthetic now or is it still a blend?
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All M1 are blends now, it's not like the good old days. Oil is made of basestocks + additive package (detergents, conditioners, etc).
M1 now contains a mixture of basestocks:
Group III+ (refined conventional)
Group IV PAO, (Poly-alpha-olefins) <- True Synthetic materials.
It's anybody's guess exactly how much, since they don't release formulation information. Difference viscosities will have different blends. People speculate that Oils like their 15w50 is almost exclusively PAO, where as the 5w30 is fairly little.
But most people agree that M1 Extended Performance 5w30 (the Golden Lid that allows 1 year, 24,000km oil changes)
contains more PAO than the regular 5w30.
ExxonMobil is world's largest producer of PAOs. 5w30 is also their top selling oil, so I wouldn't be surprised if they put as little PAO as they can get away with it in their 5w30. PAO is expensive. There's also evidence that for awhile, M1 5w30 was NOT formulated correctly, and failed the SAE Sequence IV wear test for a long time.