Rear diff drain plug idea

jeepkj02 · **Posted:** Thu Apr 13, 2006 9:41 am

Stuhlie wrote:

I'll be changing my fluids also in the rear end ! the LUBE LOCKER looks great ! So do I have the 8.25 rerend in a 03 Sport
Liberty ? Great info over heree on this site ! Glad I jioned here

Most likey yes you do have the 8.25 in the rear. You should also change your front.

kickit_in4wheel wrote:

Hey jeepkj02, I'd say put 75W140 all around. My 2002 owner's manual says that for heay duty use, or towing, 75W140 is recommended for the rear diff too. I would not recommend putting the 75W90 in the front, but only because it doesn't say you should. I am sure others have, and I have not ready any horror stories yet about the wrong viscosity gear oil destroying anything, so you'll probably be fine. Where are you going to buy it? I have not see gallon containers of 75W90 synthetic or 75W140 synthetic for sale at any of the autoparts stores. It would probably be easier to just get four 1 quart bottles, since they are easier to maneuver for squirting the oil through the fill holes.

I used the black RTV last time that says "maximum oil resistance."

I planned on buying 4 (1 qt) bottles of oil. I dont tow at all, is it still okay to put 75w140 in the rear.

benmar2000 · **Posted:** Thu Apr 13, 2006 10:14 am

Yes.. You can use the 75w-140 for the rear even if you don't tow.. But also keep in mind that if you have a trac-lok rear Limited Slip to get the Mopar Limited Slip Additive.. I don't have the part# on hand.. If you don't add it, you will hear the nastiest sound coming from your rear diff...

Ben

jeepkj02 · **Posted:** Thu Apr 13, 2006 10:35 am

Nope, I don't have a limited slip in my rear......LOL!!

gopherbeats · **Posted:** Sat Apr 15, 2006 11:33 am

I changed my diff oil yesterday, I put in, 75w90 all around.... I could not find 75w-140 anywhere in my area..

Scraping off the rear diff RTV was a pain... i just used a puddy knife, a stainless brush and just kept working at it..
Those gaskets are a nice idea.. no work envolved.. not to mention you don't have the potiential to get everything all gooooey with RTV when you put the diff cover back on

I used red by the way, maximum heat protection.

I'll let you guys know if i have any trouble with 75w90.

Rear diff drain plug idea

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