The Ford F-250 can tow a 22.8k lbs fifth wheel RV with the Power Stroke Diesel v8. They make 3 different engines each with its own capability shown below.
- 7.3L gas v8, 15k lbs, 19.5k lbs fifth wheel
- 6.7L powerstroke diesel v8, 20k lbs, 22.8k lbs fifth wheel
- 6.2L flex fuel v8, 15k lbs, 15.8k fifth wheel
- 6.8L v10, 12.5k lbs, 14,500 fifth wheel
In 2022 they make 3 engines, the 6.8L was available in previous years.
The F-250 looks like this: