Gear Oil Rear Differential Question
Posted: Tue Sep 20, 2016 1:44 am
I changed the rear differential oil of my 1976 TE37 Levin. The manual stated 90w so I put a 80w-90 GL5. I started noticing leaks on my diff and looks like a pinion seal issue. I then rechecked the level and made sure the vent was fine. Then I read an article that in early 2000 they changed the viscosity of 90W and said that the old 90W is equivalent to like a 110w. I decided to try to put a 85w-145w in it and seems to be running fine with it. No leaks.
Would this damage my diff in the long run or would it be OK using the 85-140w GL5? Can I used half 80w-90W and 85-140W to make it closer to 110w?
Would this damage my diff in the long run or would it be OK using the 85-140w GL5? Can I used half 80w-90W and 85-140W to make it closer to 110w?