How to Determine Transmission Return Line for Installing Cooler on Ford F-150
Question:
On my ford f150 with a 4r70w Transmission the cooler has two lInes upper and lower and on the transmission it has a upper and lower hose inlet which one hooks to which.
asked by: Rodney
Expert Reply:
The best way to determine which line on a transmission cooler is the return line from the radiator is to use the following procedure:
1. Start engine while engine is cold
2. Place transmission shift lever in drive for no more than 10 seconds
3. Place in Park, stop engine, and remove keys
4. Identify the oil return line by feeling both oil lines. The coolest line is the oil return line.
On the aftermarket transmission cooler the ports are not input specific or output specific. It is not directional so you can choose either port for either function. You will want to choose the inlet or outlet port location by what will make your installation easiest.
I tried looking up your vehicle specifically but got conflicting info especially since I am not sure what year your Ford F-150 is.
Product Page this Question was Asked From
Derale Combination Transmission and Engine Oil Cooler with Multiple Threads
- Transmission Coolers
- Transmission and Engine Cooler
- Standard Mount
- 17W x 12-1/2T x 3/4D Inch
- With 11/32 Inch Hose Barb Inlets
- Derale
more information >
Featured Help Information
Instructions
Continue Researching
- Shop: Trailer Hitch
- Shop: Derale Combination Transmission and Engine Oil Cooler with Multiple Threads
- Search Results: 15902
- Search Results: oil coolers
- Shop: Flex-a-lite Auxiliary Engine Oil Cooler Kit
- Shop: Curt MV Weight Distribution System w/ Friction Sway Control - Round Bar - 14K GTW, 1.4K TW
- Shop: Draw-Tite Ultra Frame Trailer Hitch Receiver w/ Cast Center - Custom Fit - Class V - 2"
- Search Results: towing mirrors
- Shop: Towing Mirrors
- Shop: K-Source Snap & Zap Custom Towing Mirrors - Snap On - Driver and Passenger Side
- Shop: CIPA Custom Towing Mirrors - Slip On - Driver Side and Passenger Side
- Shop: Hopkins Graduated RV Levels - Stick-on - Qty 2
- Video: Review of Hopkins Tools - 90 Degree Swing Out Level - HM05515
- Video: Hopkins Graduated RV Levels Review
- Video: Best 2012 Ram 1500 Towing Mirror Options
- Video: K-Source Snap and Zap Driver and Passenger Towing Mirror Review
- Shop: Suspension Enhancement
- Search Results: shock absorbers
- Search Results: shocks
- Search Results: load leveling systems
- Search Results: 75232
- Q&A: How to Reduce Engine Oil and Transmission Fluid Temperatures While Towing with a 2013 Ford F-150
- Q&A: Does Sandwich Adapter of Derale Combination Transmission and Engine Oil Cooler Have Thermostat
- Shop: Performance Chip Tuners
- Article: Performance Chips and Modules
- Video: Furrion Vision S Wireless RV Backup Camera with Night Vision Installation - 2019 Keystone Cougar Fif
- Q&A: How to Determine Which Transmission Line is the Return Line for Installing a Transmission Cooler
- Q&A: What do the Class Ratings Mean on the Transmission Cooler Pages
- Q&A: Is There an Extension Cord Available to Extend a 7-Way Connector
- Article: Frequently Asked Questions About Transmission Coolers