Mobil 1 7500 mile ??
04-01-2006, 05:23 PM
#42
Le Mans Master
Just for reference, the main requirement of the GM 4718M spec. for the Corvette is better performance in high temperature/high shear environments, and lower oxidation rate, also a necessity in an engine generating high oil temperatures. These differences mandate synthetic oil because petroleum-based oils cannot meet the higher requirements. Better high temperature/high shear numbers and lower oxidation rates are characteristic of all quality synthetic oils. Practically all the name brand synthetic oils like to mention they meet the Corvette spec. even if it does not appear on the label. In fact, even the new Mobil 1 bottles do not specifically mention the GM 4718M spec.
Don't worry so much about the 4718M spec and just look for a major brand of synthetic oil meeting API SL or ILSAC GF-3 or 4, like Amsoil, Red Line, Mobil 1, Castrol Syntec, Quaker State Full Synthetic, or Havoline Synthetic to name a few.
Don't worry so much about the 4718M spec and just look for a major brand of synthetic oil meeting API SL or ILSAC GF-3 or 4, like Amsoil, Red Line, Mobil 1, Castrol Syntec, Quaker State Full Synthetic, or Havoline Synthetic to name a few.
Last edited by TEXHAWK0; 04-03-2006 at 10:07 AM.
04-01-2006, 08:46 PM
#43
Race Director
Only Mobile One and Always trust your DIC - Come on guys, the thing on your dash. 
