If I were going to do much towing at all I think that i would want to install an aftermarket transmission fluid cooler. Roughly 50 to 100 bucks all depending.
Coolers are comparatively cheap, easy to install, and will prolong the life of the transmission. They also eliminate that potential problem of an internal leak in the radiator trans fluid cooler which can allow engine coolant to mix with the transmission fluid and which will do in an automatic quickly.
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