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
SidecarFlip wrote:DownTheAvenue wrote:
The hot fluid should go to the external after market cooler first, and then to the factory cooler built into the radiator. That way the fluid will be kept at a desirable temperature. The way it is plumbed now, the fluid cold stay way too cold, especially during cold ambient temperatures not towing.
Why would you run thye fluid through the external cooler, cool it down and then run it through the plate heat exchanger in the radiator to heat it back up to engine temperature and then run it to the transmission. Counter productive.
Moat external cooler have built in flow thermostats anyway.
I totally bypassed my radiator plate heat exchanger when I added a pair of Hayden Swirl Cool coolers and plugged the fittings. I did that 12 years ago. My tans temperature is always below 210 degrees and the cooler they run the longer they last. Internal plate coolers on trucks with automatics are basically an afterthought by manufacturers anyway.
That my view and I'm sticking to it. Heat kills slush boxes. Always has.
Actually my version is the most sensible. The new aftermarket external cooler will lower any excessive fluid temperature without adding a heat load to the radiator. Then the factory radiator cooler will ensure the fluid temperature is consistently at the proper temperature.
