2nd trans cooler

[RSeymon]

Greetings one and all.



Which line do I use to add a second cooler to my truck?



Looking at the cooler there are two lines going into the cooler one closer to drivers side other closer to center of truck.



Thanks in advance

 

[dewdo]

After the truck has been running fet under and feel of the lines. If one is hot while the other is cool then the hot side is the inlet.



Deweo in the other Washington