What type gear oil to use in MB Jeeep.

dv3468 · Post by **dv3468** » Mon Mar 05, 2012 7:24 pm

Gentlemen: I have a question on what type of gear oil to use in the T-84 Tranny and front and rear axles on a Willys MB. Is it Straight 90 Weight Gear Oil in all three?

I seem to recall Wes warning against using Hypoid gear oil in Jeep transmissions because it can effect certain alloy transmission parts.

Thanks, Dennis V.

Post by **wesk** » Mon Mar 05, 2012 9:27 pm

It really boild down to the climate in which you operate your MB. Straight weights are fine.
Only important issue is to avoid any Hi-Sulpher content gear oils in your tranny. The modern multi's have hi-sulpher but a few state they are ok to use with non-ferrous tranny parts like synchro rings.

You can use the Hypoid gear oils in the axles and use plain gear oil in the tranny.

dv3468 · Post by **dv3468** » Mon Mar 05, 2012 9:42 pm

Thanks Wes.