[Rich Biebel]

I have not seen any Onan Diesel RV units with more than about 8-10 thousand hours myself. They generally don't get used anywhere near that many hours for most owners. Yes the generator ends will likely need parts or repairs more than the engines. If you service the engine regularly and do preventative maintenance it will usually not fail. I have seen deterioration of the generator ends from weathering and just age. Engines are Kubotas or Isuzus and very reliable. 8-10-12 kw Onans are very good units and give thousands of hours of service.