Ok I've searched the site and there are quite a few threads on this but none seem to answer a few questions of mine so sorry. I'm changing both Diff fluids and the t-case. I've got a 07 4 door Rubi with a (4" teraflex lift) I see the diff (fill holes) are tilted down. I know the factory specs of how much oil goes back in, I'm pretty sure that much wont because of the tilting down so whats the easy answer of getting it all in? Lift the Jeep to one side? Put the jack under the pumpkin and lift strait up? Question #2 I noticed the T-case is tilted back also, is this how it is from the factory or is this because of the lift? If it's not how it is from the factory how do I get that tilted so I can get the recommended ATF#4 all back in?I'm pretty good with basic mechanics but don't want to take a chance cooking these high dollar things. It's the lift that's throwing me for a loop. Thanks for any help and happy trails!

 

I never noticed the hole for diffs being tilted back but you just need to fill the stock diff covers till the fluid comes to the bottom of the fill hole. Get your self a small cheap plastic pump that goes on the gear oil bottle if you want to make it really easy on yourself, much easier then trying to pour the bottle in that hole.

here are 2 write ups WOL did on the diffs and transfer case
http://project-jk.com/jeep-jk-write-...hange-write-up

http://project-jk.com/jeep-jk-write-...r-case-service

 

Ya I already have the pump and stuff but the diffs are not level anymore due to the 4" lift. I'm assuming this is the case with the lift right? as you lift the Jeep the drive shafts expand longer and the driveshaft side of the pumpkins tilt up, which now the fill holes are tilted down towards the floor more. I'm correct right? Or is the only thing thats changed is the drivshaft angle and the pumpkins are not affected. I thought I've read a few threads here that the angle of the pumpkin has changed due to a lift?

 

Ya so I read through a few more threads and when you lift you change the pinion angle which changes the pumkin angle. Right?

 

So I went and changed. Only got 1 qt in front and 2 in back and it was pouring out the fill hole. Hope this is enough.

 

Sounds about perfect if you are running stock covers.

 

I changed mine today too. I put Royal Purple 75w-90 in. But the book called for 80w-90. I have D44s. I read the write up, and they used 75-90. So I am only assuming I am ok. Any thoughts on this. Thanks.

 

So funtimes, did you ever have to add any more fluid to the front or rear

I just did the front and rear change myself removing covers cleaning out etc. I am still stock with factory covers. I ended up using 30oz in the front and 2 qts in the rear. I am on level surface as well. I just took mine for a 10 mile drive to heat it up. After the differentials cool down I will check them again to see if the level is still ok.

about the writeup, it says The values listed above, are they what was required after changing to aftermarket covers