we have one ,its a great engine, lot of UPS trucks have them ,good mpg plenty of power back and forth from ohio to AZ no problems, and any diesel will be big bucks to fix. if you do a oil change at a mercedes benz dealer it,ll cost about $100. bucks ,learn to do your own about $60. if the rv has been taken care of it,ll run almost forever ,we like ours. its fun when people ask hows the mpg and you say OH just over twenty.