I don't know much but I will give just a tad of input.. Try to go diesel I have owned a rabit that had 288,000 on it. A friend owned a ford diesel it had around 300,000 on it, Then my girlfriends Uncle has a Chevy Van with almost 200,000 on it. They are older vehicles and I don't know what they put in Motor Homes but don't take my word on it. If I could have got a diesel Tahoe I would have! I would possibly google search the paticular one you get an eye on and look for reviews. That is just me tho, As I would also trust anyone of these guys with there honest Opinions too, I'm sure this may a whole new can of worms too... Kinda like our tire, oil, and what have ya threads. Good Luck!!