Good Sam Club Open Roads Forum: Tow Vehicles: Differential fluid change
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agesilaus

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Posted: 04/28/20 12:20pm Link  |  Quote  |  Print  |  Notify Moderator

OK this is my first time doing this. I have the correct fluid and I hope the correct gasket. My question is: do I use permatex on the gasket or leave it clean?


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Cummins12V98

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Posted: 04/28/20 01:07pm Link  |  Quote  |  Print  |  Notify Moderator

You should forget the gasket! This stuff is AWESOME!!! Never had a leak.

Second pic in appropriate weight if you want to do it BEST.

[image]
[image]


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jdc1

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Posted: 04/28/20 01:20pm Link  |  Quote  |  Print  |  Notify Moderator

agesilaus wrote:

OK this is my first time doing this. I have the correct fluid and I hope the correct gasket. My question is: do I use permatex on the gasket or leave it clean?


You've never done it before? I hope you lift weights. Pumping that oil in there takes time and muscle. Gasket? Nope. Look at the post above.....

fj12ryder

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Posted: 04/28/20 01:23pm Link  |  Quote  |  Print  |  Notify Moderator

jdc1 wrote:

agesilaus wrote:

OK this is my first time doing this. I have the correct fluid and I hope the correct gasket. My question is: do I use permatex on the gasket or leave it clean?


You've never done it before? I hope you lift weights. Pumping that oil in there takes time and muscle. Gasket? Nope. Look at the post above.....
Time and muscle? I must have missed that part. And yes, use the create-a-gasket stuff.

Make sure you use the right stuff. My service manual calls for 75W-140 synthetic for my Dodge, when towing.


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2oldman

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Posted: 04/28/20 01:33pm Link  |  Quote  |  Print  |  Notify Moderator

Youtube's got it

theoldwizard1

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Posted: 04/28/20 02:13pm Link  |  Quote  |  Print  |  Notify Moderator

Permatex #2 on the cover. Leave the other side dry.

path1

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Posted: 04/28/20 02:44pm Link  |  Quote  |  Print  |  Notify Moderator

Have you checked out if you need friction modifier stuff?

I installed an extra capacity diff cover and used "ultra black" per instructions.

agesilaus

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Posted: 04/28/20 02:52pm Link  |  Quote  |  Print  |  Notify Moderator

theoldwizard1 wrote:

Permatex #2 on the cover. Leave the other side dry.


Is that the silicone stuff, a diesel mechanic told me that's what I need. Thanks for the reply

No friction additive that's for the older trucks I believe,

agesilaus

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Posted: 04/28/20 02:58pm Link  |  Quote  |  Print  |  Notify Moderator

Thanks for all the replies, I'm off to get the right permatex.

I got the fluid as specified in the manual, no friction additive that's was for older models I think. And I have a little pump for the fluid and a 20V Dewalt impact wrench for all the bolts.

dodge guy

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Posted: 04/28/20 03:06pm Link  |  Quote  |  Print  |  Notify Moderator

If yours has the finned aluminum factory cover I would get a live locker gasket. When I did my Excursion I installed the finned cover and used that gasket. They are reusable and mine never leaked. You will not have to spend time cleaning off the sealer!


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