Nope, just used regulart old 80-90 as I expect to be changing it fairly frequently from wheeling.

I changed out my breathers yesterday and even after sitting over night the rear breather made a "Whish" sound relieving some pressure in it. Chances are good that's what was wrong with the rear. Time will only tell with the front one as that one is a much older third as well.

Thanks for the replies and that great link to change out the seal myself!

Just curious, would synthetic gear oil make the problem worse or better? Thanks ZUK!

Red 1996 S10 Zr2 (Semi-Retired Wheeler)
'84 Toyota on 36's (Project in the Making)