Posted by Chris Case [107.201.30.91] on Wednesday, January 29, 2014 at 21:05:36 :
In Reply to: Re: Trans. Cooler lines in the radiator posted by Mike Hernke (MO) [63.151.218.18] on Wednesday, January 29, 2014 at 09:42:40 :
This is the internet. I've got an opinion, and you have the right to it. ;^)
Trannies don't generate much heat. They should be locked into gear, not slipping.
Torque converters do, but should be about 97% efficient. So 3% of your engines power comes out as torque converter heat.
But engines do make heat, especially on long hills at full throttle.
So my contention is that the in-radiator 'cooler' is a significant source of 'overheating' of transmissions, by picking up engine heat.
Best way to test my theory is to have a temp gauge in the return radiator hose. (some water pump housings have a FPT port)If that is at 190, so is the trans. (That heat exchanger inside the rad is damn good.) If so, you need engine cooling work, NOT a tranny cooler.
Radiator return cool, tranny hot? Torque converts do go bad.
I did put a lot of them on, when somebody else was the salesman, but personally I doubt that tranny coolers and shift kits really accomplish any added longevity.