Differential fluid change - JeepForum.com
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post #1 of 17 Old 04-14-2006, 08:00 AM Thread Starter
bryris
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Differential fluid change

Gonna do a fluid change this weekend. I have some Amsoil GL-4 80w90 synthetic gear lube left over from a tranny fluid change in my Nissan. Will that same stuff work for the differentials on the Jeep?

Also, is it better to just get some liquid gasket or actually get the custom cut gaskets from the parts store?

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post #2 of 17 Old 04-14-2006, 08:08 AM
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My dad and I are in the midst of the same project, only my bearings were shot so that delayed the project a bit. We accidentally put the pumpkin back on with "Permatex" prematurely. Let me tell you, that s.o.b. held on pretty well. So, yeah, go for the goop - skip the plastic.

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post #3 of 17 Old 04-14-2006, 08:44 AM
samahi72
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I just changed mine and I used the Amsoil 75w90. I choose that weight because it is going to Alaska and I wanted some gear lube that will flow when the temps are below zero. I bought the pre-cut gasket, coated both sides with gasket sealer and no leaks.
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post #4 of 17 Old 04-14-2006, 08:52 AM
RockWoRM
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RTV black or grey gasket sealer is what most 4x4 shops use, or buy a gasket if U so chose, but the RTV works quite well.





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post #5 of 17 Old 04-14-2006, 08:59 AM
dell2028
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I used the goop on mine. Holds the oil just fine. The oil sounds good to me too.


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post #6 of 17 Old 04-14-2006, 10:12 AM
ToGtherWeBJeepi
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Rvt

PLEASE!!!!!! don't buy the pre cut gaskets. If ur gonna do that u might as well fold up sum napkins and put on it as gaskets . There junk. Trust me i work at a parts store and believe u me i have saw some screwed up stuff when it comes to diff gaskets. Go buy yourself some blue RVT silicon and just clean up the surfaces really well. It will hold forever...
steve
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post #7 of 17 Old 04-14-2006, 11:37 AM
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get ultra black, no other....

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post #8 of 17 Old 04-14-2006, 04:02 PM
Just dune it
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Believe it or not I used to cut my gaskets from cereal boxes. Not anymore go for the goop. I use a little brake cleaner on the mating surfaces stick it together and good to go. Last week while wheeling I had to replace the oil pan on the trail, gooped it up and no leaks!
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post #9 of 17 Old 04-14-2006, 04:05 PM
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excelent instructions here:

http://www.stu-offroad.com/misc/diff-1.htm

i used Blue RTV 6B, no leaks with Mobile 1 75W-90 for the rear and castrol 75-90 for the front.

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post #10 of 17 Old 04-15-2006, 07:11 PM Thread Starter
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I just changed the fluid in the rear differential with the afore mentioned fluid and I noticed after the fact that right on the bottle it says "Not recommended for differentials and other applications requiring GL-5". Doesn't the Jeep manual recommend GL-5?
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post #11 of 17 Old 04-15-2006, 08:32 PM
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My YJ never used a gasket from the factory. They used red RTV. I've been using Ultra Blue for a while. You get the bright blue ring around the diff. Most install kits come with regular blue. If you're not wanting that then you can always go with black or ultra black.

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post #12 of 17 Old 04-16-2006, 09:10 AM
iwishihad1
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hey everybody

i desperately need to change my gear oil... but i had a few questions. how do you know when the differential is full, and where do yall buy these suction guns

thanks
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post #13 of 17 Old 04-16-2006, 10:10 AM
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Quote:
Originally Posted by iwishihad1
hey everybody

i desperately need to change my gear oil... but i had a few questions. how do you know when the differential is full, and where do yall buy these suction guns

thanks
It's a differential seal, grab whatever RTV is cheapest it will hold up fine.

To fill the differential just pop out the fill plug and fill it untill oil is splling out the fill plug, then you know it's full.

You don't need a suction gun. Just put a drain pot under the rear, remove the ten bolts then smack the cover with a hammer and it will fall right off. Let the fluid drain out, if you want to go nuts reach in with a paper towel and scrape the bottom to remove any heavy particals that might now have come out with the fluid. Clean both the mounting surface of the cover and the differential, apply a thin bead of RTV, bolt it back up and fill.
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post #14 of 17 Old 04-16-2006, 08:16 PM
Ryanpowell167
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Does it need to be filled all the way or just up to the fill plug. I have a d35 in the rear with the rubber plug and i just fill it up untill it comes out that hole. It just seems like it will only be half filled. It just doesnt seem right.....

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post #15 of 17 Old 04-16-2006, 08:30 PM
Tshark299
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It's only supposed to be filled to the bottom of that fill hole. As the gears spin fluid is splashed around inside.


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