Quote:
Originally Posted by Tyler Townsley
... If you use Red Line it still has the older additive package.
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Really? Good to know. Wouldja happen to know the API rating?? Rotella T has the good stuff in it as well, but it is actually a Diesel motor oil, and has (I'm told) more detergent in it - perhaps more than necessary to be used in a gas engine, as a rule. Having said that, Comp Cams listed the Rotella as one of the oils recommended as a break-in lube for a new flat tappet cam (along with their break-in additive).
Dayam! I'm not a chemist, and lubrication is a complicated topic. Make a mistake, and it becomes $$$ very quickly! It is hard to pick out the truth from all the hype the oil companies use without a good understanding of the chemistry involved. So, for now I'll go with Marc's recommendation for the Z (AMO 10W-40). The science he used to make that determination makes far more sense that trying to sift thru the oil BS w/o the right tools to assess the distinctions between them. I don't know 'bout you, but of all the products I buy, I'm hard pressed to think of any product that is surrounded with more advertising hype and pure BS than automotive oils...
Whatever oil Marc H. says to use, is good as gold for me.
P.