I bought the truck with 1500 miles on it used the first owner did not drive much at all..

After a few years I bought an 18 foot pontoon boat that weighs in at a monstrous 1650 lbs and the trailer is 900 then on hot days the transmission will get overheated, once to the point of blowing out fluid from the overflow on the top of the transmission.

Then I added ANOTHER cooler to it ,(it already had the towing package cooler on it so I added another in the front of the condenser) So then I took it to the shop (local transmission shop ) and had a service and had a shift kit added to it to get more flow through the transmission and it seemed to help but I did not think about outside air temp.

So if the outside temp is in the low 90s the transmission will overheat just enough to smell the fluid when I get out of the truck coming out from under the truck. But will not on cooler days in the 70s or lower..It works fine when not pulling a load and I thought that with 3 coolers on it it would keep it cool but no dice.....I have heard this from a lot of dodge owners , but usually they go out completely....not just over heat...adding the cooler did lower the running temp of the transmission quite a bit by using the computer hooked up before and after adding the cooler and the shop says the internal parts look good and the fluid is not burnt....go figure..

Now I am looking at a 2001 Dodge with the cummins diesel, hoping the transmission is better.....