Just wanted to get some input here...
Truck has the factory installed cooler. I'm towing a 5000 lb travel trailer and the truck does ok, but the transmission temp is getting near 205 F (added mechanical gauge located in pan). I have a B&M supercooler and the instructions say to mount it in series with the oem cooler. At the risk of being laughed at for using paintbrush

... is this how I should do it?
Stock
Modified
