Is this the proper GM zinc additive to use in our flat-tappet engines?
http://www.jegs.com/i/Chevrolet-Perf...62587/10002/-1
It says "use as assembly lube only, not as oil additive", but I'm wondering if maybe that is just to keep things legal? I know there are a million threads on this stuff, but the part numbers have changed, so I just want to make sure I'm getting the right stuff.
Thoughts?