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Automatic Transmission Cooler

73K views 60 replies 32 participants last post by  wolfgar 
#1 ·
Does anyone have a transmission cooler installed on their JEEP?? What brand do you recommend? How easy is the install? What BTU's should I get? Thanks :wavey:
 
#4 ·
i have a BM cooler on mine,, its freaking huge, just under half the size of the ac condenser. installation is easy, start to finish should take 90 minutes, hardest part is routing the lines so the dont rub on anything.
 
#11 ·
:whistling: Just add an aux cooler-




I'd estimate that there have been over 5000 aux coolers added since 2007 and NOT ONE auto tranny has been lost/damaged/w warranty trauma--

You must have more important things in your life to worry about--just doit--

and--------------------FAGETABOUTIT-----------

:dance::rofl:-JIMBO
 
#7 ·
Just called the dealer and they said it would NOT void any kind of warranty as long as it was installed by an ASE Certified Tech. I ordered the B&M 70268 from Amazon for 60 bux. My buddy is ASE certified so this mod will be done as soon as it arrives. Thanks for the input guys/gals.
 
#8 ·
I am not a fan of the old tube & fin style coolers. I have had the best luck with the B&M Supercooler series. I feel the flat tube/fin style adds much more surface area for the air to exchange the heat from the cooler. They are also a more durable design, especially for a Jeep bouncing around off-road.

I have used the B&M Super Coolers in everything from musclecars, street rods, RV's and now Jeeps. I also am a big fan of the AN fittings rather than the brass push barb style hose connections. Not that I have had a problem with the barb style but I prefer the AN fittings. In the past I have purchased AN fittings from Earl's and then welded them onto the B&M coolers. I was about to do this same thing on my Jeep when I ran across a cooler with the AN fittings and brackets from ORW (Off-Road Warehouse). By the time I purchased the AN bungs to weld on, measure and make a trip to purchase my hose and fittings and my time it was not a bad deal to purchase one of the pre-made kits.

I have been very pleased with the kit and it is a very straight forward installation.

You can see my installation in my build thread if you wish. A link to it is in my signature.

Mike.
 
#12 ·
I actullay got a call back from the GM at my dealer, he explained it to me ike this. The dealer should not be telling customers this and that will void the warranty, it has to be proven by Chrysler that your mod caused the damage. For instance, if your added aux cooler had a leak at the connection you made, lost all fluid and burned up the tranny, they will not cover it. But like Jim said, I'm just going to do it. I would worry less about my added cooler, than my kids cathing on fire because I was worried about voiding my warranty. I feel better about my dealer now (Northwest Dodge, Houston).

Now, are those aux cooler mounting bolts going through the existing radiator?
 
#18 ·
I opted for the B&M stacked cooler. Nice and small,effecient, and sturdy. I also
placed a small spal fan in front of it, for when I'm sitting in traffic and need to cool things down. I just have the fan wired to a switch inside the cab,via a relay. I didn't bother with a temp sensor, as I monitor my trans temp with an Aeroforce gauge. Simple enough setup, and my dealer told me it's always a good idea to install an aux cooler, and they had no problems with me installing it.
 
#21 ·
I did something similar to this on our first motorhome, I wired a fan to a toggle switch on the dash and monitored my transmission temperature through a guage. I would kick the fan on as approaching a long steep grade prior to the temperature starting to climb. Worked great.

I also wired a double throw single pole switch into the guage and had two seperate sending units feeding a signal. One sending unit was in the transmission pan/sump and the other was in the transmission line leaving the transmission going to the cooler. This way I could monitor both by the flip of a switch. I generally left it on the sump sending unit.

Mike.
 
#19 ·
I have a 2011 JKU, and had the "hot Oil" light come on several times. I ordered the B&M 70268 cooler, but was told by the dealer not to install it....would void the warranty....

I called Jeep, started a case file against them, and they agreed to fix the problem by installing a new Mopar Trans cooler for free. Just took me a few calls, and two days to set it up, and I was on the road again.

Jeep knows of the problem, they are just playing the odds that only a few people will complain about the problem, and so they fix only those who call.

The Mopar sure looks good, very good design. They don't tap into the existing rubber lines, they replace them with all new stuff in the kit. If buying it from them, it's over $600.00.

I have not been able to duplicate the "Hot Oil" light since, but I have not been able to get into the mountains where I usually have the incident occur either.

Steven
 
#22 ·
I got the B&M 70264 Supercooler for automatic transmission. Got it off E-bay
 
#26 ·
That is ridiculous. I am amazed sometimes at what some factory items cost. I bought my B&M for around $70 and even paid someone to do it and they charged me another $70. Wish I could bend over again. I hate paying for something so simple but the $70 labor was well worth the pain I didn't have.
 
#37 ·
I have used both the B&M Supercooler and the ORW kit. Quality of the cooler itself is the same, they are both a stacked plate style. I like the quality of the brackets and lines/fittings that came in the ORW kit.

I am not a huge fan of the push on barb style fittings. On the last couple of B&M coolers that I have installed on other vehicles I cut the ends off and TIG welded an AN/JIC bung on both inlet and outlet of the cooler and then used AN fittings. I was going to do the same on my Jeep when I ran across the ORW kit which already was set up for AN fittings. By the time I bought s/s braided lines and AN fittings and the cooler it still would have been cheaper but I have been happy and impressed with the ORW kit. It is a bolt on kit and really is a well thought out one at that.

Mike.
 
#35 ·
twxsby said:
I would be curious to know what your dealer says about voiding warranty if aux cooler added. Mine told me it would be voided if I added an aux cooler. I haven't given up.
They are feeding you a bunch of BS. My light came on a few times so I took it to the dealer & they gave me the run around. One of the guys on here gave me some great info so I thought I pass it along. I called Chrysler today and raise some stink about the whole deal with the oil temp. They started a case & the a case mgr called me this evening. To make a long story longer Chrysler has agreed to furnish the Mopar cooler at there expense and my dealer will supply the labor. Chrysler knows all about this problem and is really starting to worry about all the claims. Give them a call you might be surprised. .
 
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