I have a 2021 F250 with the 7.3 "Godzilla" gas engine. Bought it new two years ago, love the truck!! 20,000 miles and not one issue. Pulls my 31 foot 5th wheel as good as my old Dodge Ram 5.9 Cummins and only about a mile or two less MPG! There is supposedly no scheduled maintenance on the 10 speed transmission according to the dealer. I've always changed the fluid in my previous two trucks I've used for towing an RV. I just question this strategy of no preventive maintenance. There isn't even a dip stick to look at.

Does anyone know if this is the exact same 10 speed that is used with the 6.7 Diesel application??? I know it's not the same as the 10 speed in the F150"s

 

What trans code does it show on your vehicle's door sticker?

 

The sticker inside the door says TR G and I assume TR means transmission. I was told by a poster on another forum the 10 speed in my 2021 F250 with 7.3 Gas Engine is the same as the 10 speed in the diesel version of this truck except there are differences in the torque converter.