08JKWrangler

Anyone do a Tranny Cooler install and fluid flush at the same time? Do you think it's OK to drain the fluid from one of the cut hoses and replace it all with fresh synthetic?

ronjenx

Not much fluid will drain from the hose.

ATF+4 is synthetic.

BNE_JK

Depending on the temperature of the ATF at the sump, the fluid level is varied. see attached chart

jdgsxr1000

I installed mine this evening, I used the pics in this thread for hose routing pics. Great write up and I am glad to have seen it as I have been meaning to do this anyway. I used a maxicool cooler by Hayden automotive from Advance auto, it was $49.95 but I got 10% with a military discount so it worked for me and they look very well made they are all .75in thick and his one is 11x11.75in so it is roughly the same size. For mounting I used .75in flat bar a little overkill but I dont want it coming loose and there is about an inch of clearance between the back of the cooler and the condensor. So thanks for the grea write-up and I also used this time to black out my turn signals with some Black window tint Testor's (the model paint maker) spray paint.

maverick

Great Information! My tubes enter the side. I wasn't aware it made a difference which entered top vs. bottom... I will have to check. I suppose it addresses air entrapment. Surely I got it right as I haven't had any problems.

Regardless.... I am also considering a higher capacity pan... I read Rock Krawler will be making such.

Rhino64

I believe there is a post in this thread where it was stated that a stand alone trans cooler doesn't really do much good for trail riding. While they work well on the Hwy they don't do much good on the trail at slow speeds. I can confirm that to be true so if your installing one spend the extra few bucks and get a thermostat fan controlled unit you'll be much happier with it's preformance.

adamisadam

how can you confirm that to be true?

it seems to me that the OEM fan will pull air through all cooling fins at low speeds, making the tranny cooler effective at low speeds. unless you are planning to have the added fan come on at lower temps, I don't see how it would make a difference. please elaborate.

maverick

I would have to agree.

Rhino64

I had the B&M with out The fan and also have a aeroforce gauge which will give me my trans temp. With out the fan on a 80 deg. day at slow travel it ran around 210 degs. Which was about the same as it ran with no cooler. On the Hwy it worked great. The B&M with the fan has no problems keeping the temp at very slow speeds well under 200 degs. even on hot days say 90 deg plus. Thats been my experience. As too the factory fan I did try useing my AC which kicks the fan on but noticed no difference with the old cooler

shj_jeep

anyone tried the 'Flex-a-lite TransLife Transmission Oil Cooler' on quadratec stie ? any impressions on it ?

http://www.quadratec.com/products/94000_4126.htm