2023 F350 6.7 HO Towing 10k lb Review
Here's a towing review for a 2023 Super Duty with the 6.7PSD HO. BTW... Review done by another former Ram/Cummins owner. Enjoy... Link
Forum Discussion
Grit dog wrote:
^You mean if the thermostat is closed, it bypasses the cooler, resulting in very little cooling? That is correct.
So yes it has everything to do with cooling. Closed/bypass = no cooling. Open to the trans cooler = normal cooling.
Fwiw the OE part does a GREAT job at warming the transmission quickly.
Not long after the engine is up to full operating temp from a cold start, the trans fluid is holding right at 170 ish.
With no bypass and full cooling flow all the time, you can drive an hour and the trans hasn’t even come close to 170. Just drove to work in the Ram today. An hour later, trans was at 135deg.
What I have heard is the trans fluid bypass delete does nothing for better cooing ,just insures the fluid is flowing ,and just takes longer to reach whatever the trans runs at ,in my case 172 . If the trans is going to run 180-190 towing heavy in hot weather that delete will not help .
