Differential Fluid Change
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Posting Guru
Joined: Aug 2006
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From: High Point, NC
Differential Fluid Change
I did it on my 01 X and now I did it on my 06 F250...
The diff cover was looking pretty rough, so I knew it was time to change the fluid and give a fresh coat of paint.
Notice how 'frothy' the old fluid looked... not to pretty IMHO. But the gears looked good...
Got the cover sanded as best I could - I wish I had access to a sand blaster. If it survives another 100K, I'll just replace it next time.
The plug looked good - not too much magnetized to it.
I got all cleaned up, applied 2 coats of Hi Temp Paint and laid a bead of red RVT around it then replaced the cover. After letting it sit over night I refilled with Royal Purple 75w/140 the next morning.
I got a little messy with the Red RVT and will clean it up better later on...
So far, so good - no indication of any leaks.
BTW, both times I did this I followed Guzzle's instructions without any problems - but mine never turns out looking as good as his does. Welcome to guzzle's Rear Differential Maintenance Web Page
The diff cover was looking pretty rough, so I knew it was time to change the fluid and give a fresh coat of paint.
I got all cleaned up, applied 2 coats of Hi Temp Paint and laid a bead of red RVT around it then replaced the cover. After letting it sit over night I refilled with Royal Purple 75w/140 the next morning.
I got a little messy with the Red RVT and will clean it up better later on...
BTW, both times I did this I followed Guzzle's instructions without any problems - but mine never turns out looking as good as his does. Welcome to guzzle's Rear Differential Maintenance Web Page
Hotshot
Joined: Dec 2003
Posts: 15,368
Likes: 121
From: Stuttgart, Ar
To the OP. Check out the cast aluminum cover on the 08 'Duty and use that the next diff. oil change. No more sanding painting rusting, and it's cheap.
Hotshot
Joined: Dec 2003
Posts: 15,368
Likes: 121
From: Stuttgart, Ar
The cast aluminum rear diff. cover from an 08 is really a great addition to do when you change the fluid. It's fairly cheap but does require a little longer bolt.
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Posting Guru
Joined: Aug 2006
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From: High Point, NC
3.5 quarts to fill it.
As said, use RVT silicone. I chose the RED because it has a higher temp tolerance and I tow a 10k# TT.
As said, use RVT silicone. I chose the RED because it has a higher temp tolerance and I tow a 10k# TT.
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Posting Guru
Joined: Nov 2008
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From: CA Sacramento
I like that cover but I am hesitant about getting it because it holds less fluid.
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