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 should forget the gasket! This stuff is AWESOME!!! Never had a leak.Second pic in appropriate weight if you want to do it BEST.

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.....

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.

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

Differential fluid change | Good Sam Community

Cummins12V98
Explorer III
Apr 28, 2020
agesilaus wrote:
Turtle n Peeps wrote:
agesilaus wrote:
No fins and I actually have a gasket from RockAuto but everyone is telling me to use the silicone RTV.

The "Right Stuff" and silicone RTV are two totally different thing.

The "Right Stuff" is a very good sealer. Gaskets work too but mine seep after a while where the RS does not leak a drop........ever.

Yeah but will my local Napa have it? I've put this off enough so I don't want to wait for an order to get here. So if they have silicone RTV and not the Right Stuff that's what I'll be using.

I guarantee you NAPA and any other Auto Parts Store will have it. Lot's of different size and types of applicators.
agesilaus
Explorer III
Apr 28, 2020
Turtle n Peeps wrote:
agesilaus wrote:
No fins and I actually have a gasket from RockAuto but everyone is telling me to use the silicone RTV.

The "Right Stuff" and silicone RTV are two totally different thing.

The "Right Stuff" is a very good sealer. Gaskets work too but mine seep after a while where the RS does not leak a drop........ever.

Yeah but will my local Napa have it? I've put this off enough so I don't want to wait for an order to get here. So if they have silicone RTV and not the Right Stuff that's what I'll be using.
Turtle_n_Peeps
Explorer
Apr 28, 2020
agesilaus wrote:
No fins and I actually have a gasket from RockAuto but everyone is telling me to use the silicone RTV.

The "Right Stuff" and silicone RTV are two totally different thing.

The "Right Stuff" is a very good sealer. Gaskets work too but mine seep after a while where the RS does not leak a drop........ever.
bobsallyh
Explorer II
Apr 28, 2020
On my '03 Ram dually, the gasket is reusuable. I just pull the cover off, let it drain, wipe the housing edge off gasket, and the cover. Nut it back up. Then put the new gear oil back in out of a squirt bottle. Main thing, don't over engineer.
Cummins12V98
Explorer III
Apr 28, 2020
This squeeze bag works GREAT. No pump needed.
agesilaus
Explorer III
Apr 28, 2020
No fins and I actually have a gasket from RockAuto but everyone is telling me to use the silicone RTV.
Grit_dog
Navigator
Apr 28, 2020
Only took until the 2nd post to get off topic....
Shouldn't need a pump for the rear diff unless sway bar or something in the way. It's easy to squeeze out of the bottle. Not as much through a hose taped to the bottle, lol.

Unless you expect issues, IE existing damage to the cover, I'd not use any gasket maker on a rubber gasket. Light skin coat on a cork gasket.
dodge_guy
Explorer II
Apr 28, 2020
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!
agesilaus
Explorer III
Apr 28, 2020
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.
agesilaus
Explorer III
Apr 28, 2020
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,