Thread: 1940 gear oils
View Single Post
Old 07-12-2022, 09:33 AM   #3
Bill OH
Senior Member
 
Join Date: May 2010
Posts: 426
Default Re: 1940 gear oils
I use 90w and a max of GL4 - stay away from GL5 in the transmission, ruins brass synchros.
Bill OH is offline   Reply With Quote