How does adding an external cooler not add any fliud? That makes no sense to me.

 

Thats why I went with the 4590 series flex-a-lite. Its a 6 pass rated for 26,000 GVW with
an electric fan attached to it. With the thermal sensor it will only come on at 180* which
should keep my tranny fluid temp right where it should be. Thats my theory and I'm stickn
to it :-)

 

What do you guys mount it with?

 

there is not enough fluid pulled from the tranny to require any additional fluid. And some coolers comme w/ these long plastic sticks kinda like wire ties that u push through ur radiator and slide clips on the end. then there are some that have brackets bolted to the frame.

 

Would those zip-ties hurt the condenser?

 

Now it's fairly cold out as in the 20's and 30's mostly here but I'm not seeing my gauge go much over 100 with my B&M cooler. It stays right around 100 if doing interstate driving and what not. When it's been slightly warmer I've seen it get up to 120. The only time I've seen it get much higher is going up a 3+ mile gravel road that is very much uphill going to our place in the mountains. It will jump to around 150-180 then. For normal just freeway driving though it seems to stay right around 100-120. Is this damaging anything?

 

HTM,

Are you bypassing the radiator trans fluid heat exchanger? If you aren't, I think you might have a wonky temp sensor. Even if you are even running a 180* T-stat, it should cause the exchanger to run trans temps above 100-120. Is the cooler Pre or Post-Exchanger? Also, where is your temp sensor located?

 

Mine rarely gets over 110 all winter long, and i'm still running it through the radiator cooler. Just too cold for it to warm up much. It shouldn't hurt anything.

 

My 2005 Ram; Cummins has a Goering billet transmission. Towing our 30' fifthwheel at highway speeds the tranny runs around 170 degrees. But in slow trafficor backing that sucker will get up to 220 or more if I don't take precautions.I'd like to add an electric fan to supplement the factory fan, how much fan doy’all think I'd need?

Keep the greasy side down.

 

220 is a nightmare on your tranny


How big is your cooler now? a fan that covers its entire surface is ideal. And I would put a derale in line thermostat in the transmissions cooler out line. The fan kicks in at 180f and off once the fluid reaches at 165.