H55F oil: Red Line MT-90 versus Mobil Delvac 50 versus Lucas (1 Viewer)

[Spook50]

I use mt90 in the trans 75w90 in the case and shock proof in the diffs. All redline!

You running open diffs or do you have lockers? I've been using Royal Purple (I think it's 75/140. I'll have to double check on the bottle) in my open diffs and it's worked really well and kept them quiet. Only problem is it's pricey.

 

[dbbowen]

You running open diffs or do you have lockers? I've been using Royal Purple (I think it's 75/140. I'll have to double check on the bottle) in my open diffs and it's worked really well and kept them quiet. Only problem is it's pricey.

I have the shock proof in my open diffs now on my 60, but i ran it in my 40 which had an arb in the front and a detroit in the rear, as well as my firstgen 4runner which had a fj80 e locker in the front and fj cruiser elocker in the rear. Same experience with all of them. Quiet operation and no probs whatsoever.