Fans don't really affect highway speed temps that much because the vehicle speed airflow is much faster than the fan speed. A stock D2 will hold 100 degrees over ambient at 70 mph on relatively flat ground. A lift, bigger tires, a rack, a winch, bumper lights, all will increase that number.
Yes, true most of the focus is on petrol trucks but that is because the diesel trucks don't experience as many overheating problems. Link for where to purchase the fan is in the description.
Have you tested temps on higher speeds (interstate speeds)? I get temps creeping up running A/C in summer
Fans don't really affect highway speed temps that much because the vehicle speed airflow is much faster than the fan speed. A stock D2 will hold 100 degrees over ambient at 70 mph on relatively flat ground. A lift, bigger tires, a rack, a winch, bumper lights, all will increase that number.
It's all about gasoline. How about diesel? Catalog fan number?
Yes, true most of the focus is on petrol trucks but that is because the diesel trucks don't experience as many overheating problems. Link for where to purchase the fan is in the description.