broncojunkie
Well-Known Member
Just curious, but what oil viscosity are you all using? Any particular brands or type? And it would probably help to know a little about your engine. I've been running 10w30 in my pace car (331 stroker with forged internals) and 88gt (stock 302 HO rotating assembly with head, cam, intake, injector upgrades). I'm thinking I should probably switch to 10w40 (or possibly 15w40, since I'm a big fan of the Shell Rotella stuff...seems to work well in heavy industrial equipment that I use at work). The Rotella may not be good for performance applications, but it is supposed to be really good stuff. These cars don't see winter driving at all. A slightly higher viscosity at higher temps would offer more protection where it sees the most abuse. I realize bearing clearance is also a factor, so what are your thoughts?