ronjenx

The fan comes on at 215°F, to drop the temp back down to about 195°F.
I don't see 220° being the norm.

ConroeJK

220 is a bit hot. My engine coolant runs at 195-200 in 90 degree + weather, in and out of traffic.

Gcollura

That is what I used and it worked perfect. No more leaks from the factory crimps.

WilKJ

Thanks.
I did it this way, no leaks so far....

CRNA

B & M has already taken care of the cold weather issue. From their website:

"The Super-Coolers intended for automatic transmission fluid also offer an additional feature known as “Low Pressure Drop”. The coolers assembled with hose barb ends include a unique bypass feature allowing a controlled amount of ATF to bypass the stacked plate core when the fluid is cold. This is beneficial in cold climate areas to guard against lube system failure. Controlled by viscosity, fluid is returned directly to the lube circuit through bypass openings in the stacked plate core. As the temperature increases, more ATF is directed through the core."

Trey

Is it always the "top" line? There appears to be a tag on the hard line just before the radiator connection but I can not reach into that tight of space.

I just got my cooler from jegs and am looking forward to this install.

Sarathesahara

Planning on doing this, this weekend!

greenenvey

i put my cooler on about 3 weeks ago and last week put a aeroforce gauge in the jk.. it only got to 60 degrees outside today so it wasnt hot out by anymeans, but 30 minutes of hiwayand town driving the tranny only got to 130 degrees so it running cool as a cucumber!!

icerk

I have a 2011 Sahara Unlimited auto. Last week while driving on a lite trail in Arizona I got the old ding and hot oil light. Should I go ahead and install the cooler or take it to the dealer and have them do a diagnostic on it to see why it happened. I have just under 6000 miles on it. Plus if I do the mod I risk voiding the warranty. Any input would help. I read the transmission cooler article in JPMagazine so I should be able to do it. I have no mechanical skills

thunderstrike

Were you in 2 or 4 WD?