Originally posted by warmonger:
I tried mobil one synthetic gear oil, 75w-90 and it is shifting great both hot and cold. NO friction modifier just straight synthetic. I was having way too much noise in mu Torsen with dino fluid + friction modifier and when I changed it there was an immediate difference...for the better.



OUCH!!!

Mobil 1 gear oil is a GL-5 oil not suitable for transmissions!

It's chalk full of high pressure additives that are highly corrosive to the soft metals in a transmission. It will tear up your syncros, blocker rings, etc...

By all means flush out your tranny ASAP!!!


2000 SVT #674 13.47 @ 102 - All Motor! It was not broke; Yet I fixed it anyway.