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
Sometime back in the '90s era Ford sent a warning through their dealers, to those of us that towed/worked our truck in cold weather warning NOT to bypass ATF through the radiator. They were supposedly having lots of AT work done under warranty caused by too cold ATF temps running down the road under load.
I always run the ATF back to the radiator....two sensors and one gage with a on/off/on switch so I could see what fluid temp were going into the tranny vs out of the aux radiator. Interesting to watch the difference in all operating scenarios. You learn a lot what makes heat and how to get rid of it and what didn't make heat with a particular engine/tranny pulling different loads.
Years ago before ATF was ran through the radiator in those big slusha'matics and TC lockup clutch, we ran big out front coolers. However in the winter gauges showed fluid temps were too cool especially single digit and colder ....so we added a front bra with flaps. Hot weather with 100-115 temps we simply had to slow it down.
Their is no silver bullet answer. Outside ambient temps.....tranny size .....load being pulled....and a host of other scenarios inter into the subject.
I always run the ATF back to the radiator....two sensors and one gage with a on/off/on switch so I could see what fluid temp were going into the tranny vs out of the aux radiator. Interesting to watch the difference in all operating scenarios. You learn a lot what makes heat and how to get rid of it and what didn't make heat with a particular engine/tranny pulling different loads.
Years ago before ATF was ran through the radiator in those big slusha'matics and TC lockup clutch, we ran big out front coolers. However in the winter gauges showed fluid temps were too cool especially single digit and colder ....so we added a front bra with flaps. Hot weather with 100-115 temps we simply had to slow it down.
Their is no silver bullet answer. Outside ambient temps.....tranny size .....load being pulled....and a host of other scenarios inter into the subject.
