For those wondering about buying a former rental, in 2011 I bought a Cruise America 28R (see my signature). It had 109,000 miles on the odometer. I live in it full time in the Pacific Northwest (mostly west of I-5). It has been darn-near bullet proof. Other than chassis upgrades like sway bars, steering stabilizers, and trac bars - I recommend the following after buying a former rental:
1) check all hoses and belts for cracks - replace where needed.
2) replace all spring hose clamps with worm hose clamps (this may be a Ford thing. Ford's spring clamps get brittle over time)
3) replace every single fluid in the engine and drive train (coolant, brake, oil, transmission, differential), and in the generator. This includes filters for air, oil, fuel.
4) replace spark plugs and spark plug boots
5) have the rubber roof inspected. It may still be watertight but time and sun may have taken its toll on the roof. A new roof may be in the RV's future.
A Ford mechanic told me that coil packs do not need to be replaced en mass, but individually as they fail.
I can tell you that my 28R never received a 100,000 mile service interval. The differential fluid was sludge - necessitating a deep cleaning of the differential prior to getting new fluid.
At the time steps 1-3 cost me about $1,200 or so. Step 4, at a later date, cost me $250
