This is a curiosity question for all you engineer types out there. Are there any other manufacturers that have their alternators driven in oil? I've owned 8 motorcycles, 3 cars, and various lawn tractors, and none of their alternators were driven in oil. Is there an advantage to this? I know Ducati is the only manufacturer with Desmodronic valves but, that is kind of their trademark. Seems to me the alternator would be more efficient running in air. Any insight into this subject would be appreciated.