Transmission/transfer case fluid - JeepForum.com
 
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post #1 of 6 Old 08-19-2017, 09:40 AM Thread Starter
rjcobra
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Join Date: Nov 2005
Location: Tallahassee, FL
Posts: 59
Transmission/transfer case fluid

My 1998 TJ has only 60k miles on it. I don't believe the manual transmission fluid or transfer case fluid has ever been changed. Should I do it just because of the age of the jeep? What about the differential fluid. It has not seen any abuse.


1998 Wrangler SE
31 x 10.5 BFG AT's on Black Steelies

2003 Mustang Cobra, some performance goodies,
490 rwhp/456 rwtq
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post #2 of 6 Old 08-19-2017, 11:26 AM
Shark_13
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1998 TJ Wrangler 
 
Join Date: Dec 2012
Location: Post falls
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Yes, all those fluids should be changed if they have never been done that you know of. (Almost 20 years!!)

Also your coolant, brake fluid, and power steering, if they have never been flushed.
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post #3 of 6 Old 08-19-2017, 11:57 AM
hokahay
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2003 TJ Wrangler 
 
Join Date: Jun 2006
Location: Fort Pierce
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Quote:
Originally Posted by Shark_13 View Post
Yes, all those fluids should be changed if they have never been done that you know of. (Almost 20 years!!)

Also your coolant, brake fluid, and power steering, if they have never been flushed.
Engine oil, oil filter, air filter, spark plugs, differential oil, accessory belt.
Probably the muffler bearing and the radiator belt while you are at it.
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post #4 of 6 Old 08-19-2017, 06:09 PM
DylanC7410
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2006 TJ Wrangler 
 
Join Date: Dec 2016
Location: Orlando
Posts: 118
Quote:
Originally Posted by hokahay View Post
Engine oil, oil filter, air filter, spark plugs, differential oil, accessory belt.
Probably the muffler bearing and the radiator belt while you are at it.
You could also straight pipe it so you dont have to replace the muffler bearings because those could be a pain the *** and you still would have to change them out later when they wear out again, just take the muffler off and call it a day especially if you live down here in FL
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post #5 of 6 Old 08-20-2017, 01:41 PM
2jhanna
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2002 TJ Wrangler 
 
Join Date: Jun 2007
Location: Denton County, TX
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Manual, ax5, and t-case are very easy and cheap to change. Tranny can use a couple qts of synthetic 10/30 motor oil, and t-case any ATF, as it is not picky.

Both are drain and fill gear boxes. Although a couple of special tools are needed. Make sure you loosen the fill plug before draining.

Consider changing axle gear oil also.

jhanna
denton county, tx
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post #6 of 6 Old 08-20-2017, 08:57 PM
MoFarmBoy
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2006 TJ Wrangler 
 
Join Date: Aug 2013
Posts: 193
Just assume the PO was a cheap, hard-driving, abusive owner. So change out everything. Seriously.
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