Forum Discussion

falconbrother's avatar
falconbrother
Explorer II
May 07, 2018

Transmission oil coolers and how cool should you go.

There has been some discussion here about adding a transmission oil cooler, or supplemental oil cooler, and the possibility of too much cooling. Here's a link to the etrailer transmission oil cooler ...
Tow Vehicles
Bionic_Man's avatar
Bionic_Man
Explorer
May 07, 2018
Clicky

Isn't it true that todays transmissions and the fluids that they run are ok with higher temps? My Yukon XL Denali has the tow package, and I have seen temps above 230 (actually up to 250) when towing my boat.

I spoke with techs at two different GM dealerships, and they both told me that for short amounts of time (like climbing Ike or Vail Pass), those temps are nothing to worry about.

About Travel Trailer Group

44,052 PostsLatest Activity: Oct 25, 2025