Black Rear Diff fluid
06-29-2010 | 03:13 PM
#12
JK Jedi Master
Joined: Jan 2008
Posts: 11,463
Likes: 162
From: Austin <--> Colorado Springs
I thought the exact same thing, that they did not change the fluid, but I know they did. There was a new gasket installed, which meant they had to take the cover off, which would empty the diff. I wonder if they cleaned it or not when the cover was off, or just slapped the cover back on and refilled it.
06-30-2010 | 11:32 AM
#15
JK Enthusiast
Joined: Oct 2009
Posts: 493
Likes: 0
From: Halifax,Nova Scotia
Recently took the Jeep in for an oil change and they found the rear diff fluid to be black. It had been only 5k miles since the Diff fluid was changed during the 30k service. The front fluid was perfect. The only difference is I now have a 2.5in lift and 33's installed shortly after the 30k service. So only 5k with the lift installed. So I have a couple of questions?
1) What would be causing this? Shop told me could have just been super dirty, or have a bearing going bad.
2) Should I worry much about it? Shop told me it will be fine until next oil change and have it looked at then!
The shop changed the oil for free, so that was a pleasant surprise.
1) What would be causing this? Shop told me could have just been super dirty, or have a bearing going bad.
2) Should I worry much about it? Shop told me it will be fine until next oil change and have it looked at then!
The shop changed the oil for free, so that was a pleasant surprise.
check this out, i had the same question awhile ago from what i gather its because mine hasnt been cleaned properly
06-30-2010 | 02:44 PM
#16
Thread Starter
JK Newbie
Joined: Sep 2007
Posts: 85
Likes: 0
From: Rockville, MD
https://www.jk-forum.com/forums/show...ght=diff+fluid
check this out, i had the same question awhile ago from what i gather its because mine hasnt been cleaned properly
check this out, i had the same question awhile ago from what i gather its because mine hasnt been cleaned properly
Shop said they cleaned everything with the cover off, but since it is just words spoken by a dealership, I will take it at face value. Hopefully all will be well at the next oil change for the Jeep, they will check the diff again.
06-30-2010 | 05:06 PM
#17
JK Jedi Master
Joined: Jan 2008
Posts: 11,463
Likes: 162
From: Austin <--> Colorado Springs
Could it be the actual oil they used?
I seem to recall a thread a while back indicating that dealerships (or a specific dealership, at least) used big barrels of lower quality oil. As opposed to the higher quality stuff most of us grab off the shelf...
I seem to recall a thread a while back indicating that dealerships (or a specific dealership, at least) used big barrels of lower quality oil. As opposed to the higher quality stuff most of us grab off the shelf...