75W -vs- 85W Gear Lube

Jeepjeepster · **Posted:** Sat Mar 25, 2006 6:45 pm

jdumont wrote:

I am also pretty lost with this fluid type conversation. My 02 manual says under recommended fluid in the diff section "Mopar gear lubricant or equivalent thermally stable API-GL5 grade." It then goes on to say if you tow to use 75W-140 Syn. It never says what to use if you dont tow....

80w-90 for non-towing.

Eddo · **Joined:** Thu Jul 07, 2005 7:01 pm **Posts:** 1214

jdumont wrote:

I am also pretty lost with this fluid type conversation. My 02 manual says under recommended fluid in the diff section "Mopar gear lubricant or equivalent thermally stable API-GL5 grade." It then goes on to say if you tow to use 75W-140 Syn. It never says what to use if you dont tow....

Almost all gear oils are GL-5 also. It just a sever pressure rating. You kind of have to look hard for a non GL-5 gear oil.

EugeneTheJeep06 · **Posted:** Sat Mar 25, 2006 6:51 pm

So many different types, just use cooking oil and peanut butter !! J/K :wink:

75W -vs- 85W Gear Lube

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