Rotax + Avgas = far more regular preventative maintenance, something the "taxes at YSBk seam to lack... keep the oil lead free and they go forever...
running the avgas, oil change every 25 Hrs MAX is recommended... the oil i have seen in some out there is liquid lead, nothing like the light bronze colour it should be.
though, the RV look a tough vehicle to clear some good size trees and remain intact