Forum Discussion
Travlingman
Jan 18, 2020Explorer II
Cummins12V98 wrote:
If the trans cooling system is designed to keep the temp near 190 even at full GCVWR on a hot day and long 6% grade all will be well.
Well, it isn't. They are designed to run around 220 to 230 under load. The cooling fan isn't programmed to hit full until over 250 degrees.
About Travel Trailer Group
44,055 PostsLatest Activity: Dec 23, 2025