Quote:
Originally Posted by Ziegelsteinfaust
The act of the field being whipped around by the pump, pressurized by the pump, and passing through the box all heat the fluid up. Add in under engine bay which is hot attached to a very warm engine.
It helps the seals last longer, and the pump work more evenly since the fluid won't thin out technically by heating up.
I am not sure when it becomes nesacary, but brand F was quite into them in the 3/4 ton and above rating.
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Yes correct the fluid temp was at 230F after driving on the highway no overdrive motor turning 2500 at 75 after cooler installation temp down to 190 F every bit helps same reason I run a trans cooler and a oil cooler with a 180 thermostat oil temp dropped from 240 F to 200F in the summer heat