auxilary transmission cooler -
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post #1 of 5 Old 03-01-2013, 10:58 AM Thread Starter
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1991 FSJ Wagoneer 
Join Date: Feb 2013
Location: Closter
Posts: 64
auxilary transmission cooler

I have a 1991 wagyy with factory towing package.

Just got a new aluminum radiator that is supposed to cool transmission as well. I'm not sure if I can get rid of the auxilary transmission cooller that's stuck in the front of the car or do I need to keep it.

I don't plan of using the car to tow anything heavy or for any distance.

any input from people who swapped radiators is welcomed!

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post #2 of 5 Old 03-01-2013, 05:20 PM
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1976 J-Series Truck 
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Location: Whetstone, Az
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You can keep it or toss it. I would keep it. Your old radiator probaby has the tranny cooler in it as well.
Keeping it will keep your tranny temps down a little, and who knows when you'll have to tow something. Especially if you have a tow hitch

Beauty is in the eye of the jeepowner.
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post #3 of 5 Old 03-03-2013, 06:42 AM Thread Starter
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1991 FSJ Wagoneer 
Join Date: Feb 2013
Location: Closter
Posts: 64
Thanks for the input.

I was hoping to hear from people that upgraded to an aluminum radiator and ditched the old tranny.

The pipes to the auxiliary seemed almost clogged on mine .........
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post #4 of 5 Old 03-03-2013, 07:15 AM
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1975 CJ6 
Join Date: Dec 2012
Location: Medford
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You need a transmission cooler of some kind.

You can use the one in the bottom of the radiator, or the auxiliary. A typical installation plumbs the auxiliary in series after the factory cooler in the radiator.

1) '77 J10 LWB, 258/T15/D20/3.54 bone stock, low options (delete radio), PS, hubcaps. 2) '82 J20 360/T18/NP208/3.73, KOs, 7600 GVWR 3) '75 CJ-6, 304/T15, PS, BFG KM2s, soft top 4) '95 VW Golf Sport 2000cc 2D
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post #5 of 5 Old 03-03-2013, 07:41 PM
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1990 FSJ Wagoneer 
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Really no reason to ditch it unless your worried about leaks. I would keep it and replumb it, a cooler tranny is a happy tranny.

"I like fun" Edd
Clawed: 90GW, TFI, Streetfire, 3"lift all spring, 31"BFG ATs, working RKE, Edel2131, Holly 1850, mild cam,
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radiator , transmission cooler

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