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Unread 08-16-2008, 10:42 AM   #1
lsejlowe
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2002 WJ 
 
Join Date: Jan 2005
Location: Wichita, KS
Posts: 113
90,000 mile service

I'm rolling up on 90K in my '02 Overland and want to do a full round of preventative maintenance. The stealership wants $600 for their standard 90K maintenance routine. WTF are they thinking? Here's what I'm planning on:

-Oil change
-spark plugs
-coolant drain and refill
-front axle oil change w/ limited slip additive
-rear axle (DANA 35) oil change w/ limited slip additive
-transmission drain and refill, new filters
-transfer case fluid change
-general check of suspension and steering

Anything I should look for in the transmission while the pan is off? I know these things have a terrible track record, but I haven't noticed any real problems yet. WJjeeps says not to mix other coolant with the Mopar stuff. Am I fine just draining the radiator and block and filling it back up? On the DANA 35, do I just pry that rubber plug out, or is there more finesse to it? Should I use the Mopar oils in the differentials with Mopar limited slip additive, or am I fine using Lucas and Mobil 1 with a different brand additive?

What else would you guys add to the list?
TIA

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Unread 08-16-2008, 11:14 AM   #2
elmer_fud
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1995 ZJ 
 
Join Date: Jan 2008
Location: colorado
Posts: 2,457
Quote:
Originally Posted by lsejlowe View Post
I'm rolling up on 90K in my '02 Overland and want to do a full round of preventative maintenance. The stealership wants $600 for their standard 90K maintenance routine. WTF are they thinking? Here's what I'm planning on:

-Oil change
-spark plugs
-coolant drain and refill
-front axle oil change w/ limited slip additive
-rear axle (DANA 35) oil change w/ limited slip additive
-transmission drain and refill, new filters
-transfer case fluid change
-general check of suspension and steering

Anything I should look for in the transmission while the pan is off? I know these things have a terrible track record, but I haven't noticed any real problems yet. WJjeeps says not to mix other coolant with the Mopar stuff. Am I fine just draining the radiator and block and filling it back up? On the DANA 35, do I just pry that rubber plug out, or is there more finesse to it? Should I use the Mopar oils in the differentials with Mopar limited slip additive, or am I fine using Lucas and Mobil 1 with a different brand additive?

What else would you guys add to the list?
TIA
Maybe consider greasing the suspension components.

If you are draining the coolant, probally wouldn't hurt to flush it at the same time.

I have just pried the the plug out off the differential with a large, flat screwdriver.

the other stuff I am not sure about because I have a ZJ
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95 ZJ, 5.2 V8,160,000 miles
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Unread 08-16-2008, 02:04 PM   #3
QuadraTokn
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1930 WJ 
 
Join Date: Dec 2006
Location: Chicago, IL
Posts: 5,048
drain and fill the radiator. Back flush the heater core and everything to get as much out as possible. That will get rid of most to all the fluid, then you can put the coolant you want in it.

I would take the diff covers off to change the fluids, that way you can take a look at the internals.

Make sure you replace both trans filters, there are two.
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Unread 08-16-2008, 02:12 PM   #4
CMARJEEP
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You have a Dana 44a not a 35....
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Unread 08-16-2008, 04:14 PM   #5
lsejlowe
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2002 WJ 
 
Join Date: Jan 2005
Location: Wichita, KS
Posts: 113
thanks for the replies. What do you mean when you say to backflush the heater core? I was thinking about just draining the radiator and block, filling with distilled water, running it for a few minutes (with heater on full blast), draining it all again, and then filling with 50/50 coolant and distilled water. Seem like it'll work?

As for the DANA 35/44 question... when I looked underneath I saw only a rubber plug, no metal threaded plug. I'll look for a stamping to confirm, but I think I've got the 35. Was the Overland supposed to come with a 44 in 2002?

If I pull the diff covers, do I just use a bead of RTV when re-installing? Or is there a gasket?
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I drive an American Car.
It's a lot better than those rice burners and strudel wagons.
-Artie, "The Larry Sander's Show"
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Unread 08-16-2008, 04:49 PM   #6
QuadraTokn
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Backflushing involves buying a Prestone back flush kit at auto zone and connecting a garden hose to one of your heater core hoses to really flush things out.

After you drain the radiator you will want to run a garden hose through it before you fill it with water and let it run a while. I would use regular water, not distilled, while running it for a few minutes, just to not waste $ on distilled water. Use distilled with the coolant.


The V8 always came with the 44a. Its not a 35 or a 44, its a 44a. The center ection housing is aluminum.

Some companies do, but I dont think Mopar makes a gasket for the 44a. I always use RTV, its much cheaper than a gasket.
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Unread 08-16-2008, 09:27 PM   #7
reneveah
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03 Jeep WJ Overland> http://www.cardomain.com/ride/2370770
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Last edited by reneveah; 08-16-2008 at 09:42 PM.. Reason: Snother post
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