Added transmission cooler (I thought)
I brought my truck in for a oil change and transmission service. While in I decided to have them add a external transmission cooler. So I got the call it was ready. The shop installed a NAPA rapid coo...
Forum Discussion
It should be thru the radiator and then thru the external cooler. That's how it's done from the factory. I've had stock trucks that run 120-140* in cold temps. From my experience, people that say the transmission will/can run too cold either don't know of or have never lived in cold climates where completely stock vehicles run at these temps.
