Transfer case oil - 90/140 or 85/90?

scot

Well-known member
Sep 12, 2004
96
0
Anyone have any theories on running the heavier oil in their tcase? I was reading through the old messages and it looks like some people are running heavier oils, specifically the lucas 90/140. I am mostly trying to reduce the amount of tcase whine I get, and will probably eventually order the mainshaft oil feeder (http://www.steve-parker.co.uk/designed.htm) if the 90w/140 doesn't do the trick.

I am located in virginia, so no -25 degree mornings or anything like that.


Scot