Differential Flush???
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New User
Joined: Jul 2008
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Differential Flush???
My 04 6.0 Ex has about 120K miles, and my local dealer is suggesting a Differential Flush.
I'm not really familiar with what that requires, I think it's removing the cover back there, spraying something on the gear, putting a new gasket on, and filling with differential fluid.
Is this correct? He mentioned something about silocon based differential fluid.
Is this something that can be self performed? A mechanic acquaintance of mine suggested that RTV can be used in lieu of a new gasket.
I'm on a budget these days life most, but not so much that taking care of my ex isn't a high priority.
Thanks in advance.
I'm not really familiar with what that requires, I think it's removing the cover back there, spraying something on the gear, putting a new gasket on, and filling with differential fluid.
Is this correct? He mentioned something about silocon based differential fluid.
Is this something that can be self performed? A mechanic acquaintance of mine suggested that RTV can be used in lieu of a new gasket.
I'm on a budget these days life most, but not so much that taking care of my ex isn't a high priority.
Thanks in advance.
Senior User
Joined: Nov 2010
Posts: 155
Likes: 0
From: West Chester, PA
Some say it does not need to be done unless the axle has been submerged in water. Some say you should change it every 100,000 miles.
Here is a link on how to do it if you want to do it yourself. I personally like to use (The Right Stuff)
for the gaskets. Also... it isn't really a flush... just a change.
Rear Axle:
Welcome to guzzle's Rear Differential Maintenance Web Page
Front Axle:
Welcome to guzzle's Front Differential Maintenance Web Page
Here is a link on how to do it if you want to do it yourself. I personally like to use (The Right Stuff)
for the gaskets. Also... it isn't really a flush... just a change.Rear Axle:
Welcome to guzzle's Rear Differential Maintenance Web Page
Front Axle:
Welcome to guzzle's Front Differential Maintenance Web Page
Fleet Owner
Joined: Jan 2004
Posts: 26,007
Likes: 575
From: Brentwood,CA
RTV silicone is what the this axle requires! There is no gasket , just make sure to use a firm RTV like grey when sealing the cover. The fluid will run you about 50.00 plus the cost of the silicone.
Logistics Pro
Joined: Mar 2010
Posts: 3,533
Likes: 497
From: NC
Felpro does make a gasket for the cover, I used RTV, did not wait to fill and drive and no leaks.
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FTE Leadership Emeritus
Joined: Sep 2003
Posts: 12,253
Likes: 763
From: Houston, Texas
I would do it, but I'd do it myself....
Front:Welcome to guzzle's Front Differential Maintenance Web Page
Rear:Welcome to guzzle's Rear Differential Maintenance Web Page
Front:Welcome to guzzle's Front Differential Maintenance Web Page
Rear:Welcome to guzzle's Rear Differential Maintenance Web Page
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