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    List of Real Synthetic/Fake Synthetic Oils?

    I remember reading that many of the passenger car oil makers advertising "full synthetic" are actually just filtered dino oil. I seem to remember castrol Syntec is dino, Amsoil synthetic is real synthetic. Is there a comprehensive list of what oils are real syn? Also: is there a reliable list...
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    Can't Use 10W-40 in a 2002 cavalier?

    Just wondering what the general consensus is about dufus car makers who put in the owner's manual that you MUST use 5W-30 oil and no other, you must NOT use 10W-40 oil or it may "damage the engine"....... for the record, I have had my Cavalier for about seven years now and I run 5W-30 or 10W-30...
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    Is This Stuff Really Better Than ZDDP?

    http://www.hyperlube.com/ZRA_Spec_Sheet.pdf They claim this stuff actually protects better under extreme loading than ZDDP, but is completely non toxic to catalytic converters. Anybody know how good it is?
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    Best ZDDP Levels For Motor Oil?

    Now that most of the oil makers are being forced to take out zinc compounds (ZDDP), we have aftermarket ZDDP additives available. For old engines with flat tappet cam design, ZDDP is important to prevent cam scoring. Anybody know what the best level for ZDDP is? I recall about 1500 to 2000 ppm...
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