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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.



I don't doubt that but I didn't buy either of them until 2004 they both had less than 5k on them when I got them
and I not in a pissin match just stating facts.
is less zinc a good thing NO but as stated build the motor correctly and change oil like you should and any SAE oil will serve you well.

70 duster full chassis super pro 416 CNC Indybrock heads 727 w/brake

best so far 1.212 60 6.219 in 1/8 at 110.88 9.768 at 137.81 1/4