Trans cooling
I have installed an additional trans cooler with fan on my 2006 Dodge diesel 5.9. My cooling temperature on the Hwy is 165, however in town traffic it shoots up to 200 to 212. I thought about installi...
Forum Discussion
The big reason temperature is higher in traffic is because the torque coverter is spending more time unlocked. As another poster said, slip it in neutral when waiting at intersections. If you have an EGT gauge, check the difference in temperature when idling in drive vs neutral. The temp will be slightly higher in drive because of the extra fuel being burned to overcome resistance in the torque converter. Some of that heat is going directly into the transmission fluid.
