What is the best Ford Transit Custom engine for heavy duty towing?

I am looking for a Ford Transit Custom engine that can handle heavy duty towing. Is there a specific engine option or feature I should be looking for? I am worried about the wear and tear on the engine while towing large loads. Any advice would be greatly appreciated.

I would recommend the 3.5L EcoBoost V6 engine for heavy duty towing. It has a max towing capacity of 6,800 lbs and a strong torque output. It also has Ford's AdvanceTrac stability control system which helps with control and stability while towing.

I have been towing with the 3.2L PowerStroke diesel engine and it has been great. It has a max towing capacity of 5,100 lbs and the diesel engine provides better torque for towing. Just make sure to properly maintain it to avoid any issues.