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I have a 2000 Ford 7.3 lifted 6" with 37" tires. I purchased a 35' Toyhauler and I continue having trouble pulling grades with my tranny. I have full synthetic and have added greater capacity cooler onto front of radiator. Tranny reaches 220-240 degrees and wants to keep rising. I had to stop half way up the last grade I pulled due to my temp. What can I do to assist my truck in pulling this beast?
 

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Well, This is what I pulled:
Pulling hill no trailer - 180-220
Pulling hill with trailer - 190-280 depending on load and how long a hill, or whether you can pull the hill in lock up or not.

Temps will always be higher when out of lock up, because 90% of the heat generated in an automatic transmission is from the shearing of the fluid in the converter. Temps will be lower when in lock up because the input shaft of your transmission is locked to the crankshaft on the engine.

Test the accuracy of the temp gauge and then make sure you change your transmission oil once a year, and install a secondary oil cooler if needed.
 

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:goodpost7td::7309300734: A bit late on this thread don't you think?
:Na_Na_Na_Na:
 
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