Thanks for the posts! Is there a big difference between say 75-90 and 75-105? Some go even as high as 120 I think?? This car will be driven in temps between 50-100 degrees outside.
And when filling, I just fill it up 'til it's even with the fill hole is that correct? Thanks again.
Yes there is a difference betheen the 75W90 and the heavier oils. The trans will be harder or slower to shift with the heavier oil. It will also be easier to shift with the Amsoil in it over a petrolium oil.
'69 RS/SS396 pro street