Quote Originally Posted by Don Shillady
I checked the B&M directions and they do specify the return line for the sensor. OF course that would hopefully be the cooler of the two lines so that reading is optimistic.

Don Shillady
Retired SCientist/teen rodder
OH, almost forgot, I like the idea of putting the sensor in the return line. I think I'd like to know if the trans was getting a "hot" fluid "added in".... If the temp going into the trans was say 140' to 150', you could assume that the coolant from the engine was influencing the trans fluid cooler. If the Engine temp got excessive at say, 200' : 205' yet the trans cooler return stayed at 140' : 150' you'd know you're radiator system was working and a problem was within the motor and not the trans adding to a different problem.

Well, my 2 cents.. IMHO...