jessyj
Senior Member
I,m just wondering if I should get a cover gasket for the rear 9 1/4 in my 1500 ram, or just use black rtv? Thanks all.
Rear diff gasket or not.?
- Thread starter jessyj
- Start date
Disclaimer: Links on this page pointing to Amazon, eBay and other sites may include affiliate code. If you click them and make a purchase, we may earn a small commission.
Okiespaniel
Senior Member
- Joined
- Dec 18, 2011
- Posts
- 1,645
- Reaction score
- 897
- Location
- Work, Shop, Computer
- Ram Year
- 2000
- Engine
- magnum, 5.9
I've used both and either way haven't had an issue.
If you use a gasket, use something like Permatex 1 which dries hard. Perm1 works as a sealer which works with the gasket. It is not recommended that you use silicone gasket maker with a gasket.
The disadvantage to Perm 1 is that you have to scrape it good when removing it. It glues the gasket to the mounting surfaces and the gasket tears apart if you remove the cover. But it is a permanent seal.
If you use silicone, don't use black. Permatex sells a silicone gasket maker designed specifically to seal in differential lubricants. Mopar also sells it.
The stuff works great.
If you use a gasket, use something like Permatex 1 which dries hard. Perm1 works as a sealer which works with the gasket. It is not recommended that you use silicone gasket maker with a gasket.
The disadvantage to Perm 1 is that you have to scrape it good when removing it. It glues the gasket to the mounting surfaces and the gasket tears apart if you remove the cover. But it is a permanent seal.
If you use silicone, don't use black. Permatex sells a silicone gasket maker designed specifically to seal in differential lubricants. Mopar also sells it.
The stuff works great.
Last edited:
dapepper9
Senior Member
- Joined
- Feb 7, 2013
- Posts
- 5,908
- Reaction score
- 2,224
- Location
- Iowa/Nebraska Border
- Ram Year
- 2001
- Engine
- 5.9L V8
Ive used the ultra black before (today in fact) but im also much pickier about changing fluids often and probably change it significantly earlier than most. I also had it on hand already though i don't recommend using it.
The permatex diff specific stuff is much better suited though. I dont like gaskets for the very reason Okie outlined: gotta scrape it off. Big thing with silicone is follow the directions on when to re-add fluids and re-enter the vehicle into service
The permatex diff specific stuff is much better suited though. I dont like gaskets for the very reason Okie outlined: gotta scrape it off. Big thing with silicone is follow the directions on when to re-add fluids and re-enter the vehicle into service
Rigs
Junior Member
- Joined
- Dec 27, 2018
- Posts
- 14
- Reaction score
- 0
- Location
- Gainesville Texas
- Ram Year
- 1996
- Engine
- 5.9 Magnum
Just did mine a week or so ago. It had the sealant and I went back with a gasket. So far so good, but I'm going to put a mag-hytec cover on soon, which has a reusable rubber gasket built in, which is by far the best, IMO.
Dave2018
Senior Member
- Joined
- Aug 17, 2018
- Posts
- 459
- Reaction score
- 377
- Location
- Texas
- Ram Year
- 2018,Previous 1998
- Engine
- 3.6L,Previous 5.9L
I just changed mine and put on a felpro gasket for the 2nd time. I prefer it to the sealant that came from the factory as there is no mess to clean the mating surfaces. I don't permatex the gasket, Heavy wheelbearing grease to hold it in place and bolt it down. Never had a leak in 190,000 miles. Gasket is about 6.50 from oreilly's. The synthetic oil about 30, and the friction modifier about 9 I believe. It totals out to about $50.
