Quote:
Originally Posted by regandr
for track use, you need a synthetic base stock oil. most synthetic oils today do NOT come from a synthetic base stock. synthetics resist heat much better (i.e. track use). I use exclusively 0W-40 Mobil 1 European formula because it comes from synthetic base stock. 40W to better resist heat. other Mobil 1 oils do NOT.
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Please elaborate on your claim that most synthetic oils do NOT come from a synthetic base stock as well as other Mobil1 oils do NOT.
You are going by very old, outdated
assumptions. If you are referring to Group III base stocks, Mobil1 0W40 does indeed use Group III base stocks. Try doing a google search on Visom. Mobil1 uses Group III, Group VI PAO's, and Group V aklylated naphthalene base stocks across all of their synthetic oils. Most synthetic oils today are blend of at least two base stocks.
And Shell's Group III GTL base stocks match or beat PAO's. And the overall package is more important than base stocks anyway.