whats up guys. im changing some fluids out on my dodge, its a 2007 dodge ram 4x2 with the 4.7l. ive been reading alot on these forums and kind of have an idea of what i need and what i need to do. but most of the differential threads i find are about the 2500 and 3500s


i know i need a little under 4 quarts, some kind of sealer, and a good brand of atf4?

does that sound right?


my question is for someone that doesnt tow a whole lot, do i need the 75w90 or the 75w140? and do i fill it up to the top or a little below the hole? can anybody give advice to a person who has never done this before?

 

Use the recommended fluid. Doesn't have to be Mopar brand, but this is from the 08 owners manual:

Mopar Synthetic Gear Lubricant SAE 75W-140 (MS-8985). Limited-Slip
Rear Axles on 1500 Models Require the addition of 118 ml (4 oz.) Mopar
Limited Slip Additive or equivalent.

 

I tow or pull but not alot. I still used the 75-140. You might as well go with the heavier weight IMO

 

You can get away with 80w-90 if you don't use your truck for a truck. I would opt for the 75w-140 but it's $10 more per qt. $20 more since you'll need 2 qts. I like THIS rtv sealant as you can put it on and seal it up right away. Fill the fluid immediately and drive off. Regular rtv I would let set up before you pour fluid in. There are smaller botles of the Permatex and there is alot more in the can than what appears to be. You can do like 10 diff covers with the above size can.

 

ok so ill use the heavier weigh, and rtv check. how full should i fill it? and we're talking about atf correct? obviously if i see gear oil on the bottle ill prob use that.

 

gear oil for the rearend. atf+4 for the transmission.