1992 Winnebago Adventurer

I knew a guy that had an air cooled diesel in his Semi (I believe it was called a Deuche Diesel pardon the mis spelling the diesel engine was made in Germany). That air cooled diesel ran great for him and it was the only one I seen in a big truck. His name was Willie so we abruptly named him "Air Cooled Willie" That's the only big diesel air cooled motor that I've heard of!