'89 Turbo Trans Am Oil

[GMBoy]

I have an 87 Buick GN with the basic mods, run 18psi. I use Redline 5w/30 with complete confidence.

 

[bigt61]

Originally Posted By: clinebarger
With a Broken-In Stock Cam & New Stock Springs on a Turbo 3.8L Buick, You don't have to freak out over ZDDP levels, If it hasn't flattened a lobe already. It most likely won't....EVER.


Exactly right. Regular M1 5W-30 is fine - switch to HM if it leaks. M1 0W-40 if you want more oil pressure.