So what i have gathered is amsoil 75w-90 for the trans and diff. 2.1qt for the trans and 1.1qt for the diff and some lsd additive in addition to the 1.1 qt in the diff. The part i am unsure about is the lsd additive and how much oil /additive do i add? Also is there any other recomendations?
o yah i have a 85 gsl.
P.S. Any one got a front cover for a 12a?
Thanks for all the help sorry about the gramer
Peter A. Trapino

 

I recommend RedLine MT-90, 2qt for the Trans.

RedLine's pretty much the best you can get. Some folks go for the additives, but RedLine doesn't need 'em, so it simplifies things. Bugger to find around here though.

Any 75w90 will do for the diff, as long as it's synthetic (doesn't HAVE to be, but syn lasts longer).

Jon

 

if you are pre-mixing then just empty about half of a quart in to your diff. then pour the pre-mix solution in to the half that is still in the bottle and shake it a little. then pour the rest in the diff.

 

So i dont need lsd additive? Red line is better than amsoil?

 

Amsoil is excellent, you will not be disappointed.