How to Determine Which Transmission Line is the Return Line on a Vehicle for Installing Cooler
Published 06/01/2015 >
Question:
what line is the return line on 2000 dodge Dakota on trans top or bottom
asked by: Al
Helpful Expert Reply:
An easy way to tell which of your transmission fluid lines is the return line is to wait for the truck to be cold, then start it up and shift into drive for about 15 seconds and apply a bit of throttle with the brake firmly applied. Then put it back in park and turn off the truck. Then under the truck carefully touch the transmission lines. One will be noticeably warmer. So that makes the cooler one the return line.

Product Page this Question was Asked From
Derale Series 8000 Plate-Fin Transmission Cooler Kit w/Barb Inlets - Class IV - Efficient
- Transmission Coolers
- Plate-Fin Cooler
- Full-Size Truck
- SUV
- Standard Mount
- 11W x 12T x 7/8D Inch
- With 11/32 Inch Hose Barb Inlets
- Derale
more information >
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