Quote: Well I had 2 1996 vetts both 6sp with the LT4 one with minor upgrades and the other one was pushing 490hp with heavy ol steel rods and regular ol pistons and I beat the he!! out of both of them for years and the Mobil 1 did just fine.
Mobil 1's formulation has changed significantly over the last 15+ years. The stuff from back then was better suited to that type of application than what's on the parts stores shelves today.
