I have a nice sized trany cooler on the car right now and I am wondering if I still should have the fluid run thru the factory cooler built into the radiator? My issue right now is that the trany is going and will slip at around 4-5k from 1-2 only when above 185* My thinking is that the heat from the rad is waking up the fluid in he trans. Which I'm sure normally is a good thing. But right now it is causing me to have to drive very slow until I can get to 2nd gear. The rest of the gears the trany is solid! And when the trany is cold it is solid. So I figure if I can run the fluid thru just the cooler I have that I will stay cooler longer. I don't normally go on long trips so what input do you all have? And yes I am planning for a replacement trany. Actually planing an entire engine trany swap. Yes I know i have a 4t60e but this I feel has more benefit to the sub forum and don't want to put it in both.
