Diesel engines -- low miles?

I bought a 1999 DP two years ago with only 19,000 miles on it. My biggest concern over the low mileage units that I saw wasn't the engine as it was the coach itself. Most low mile rigs were not moved and had been lived in and appliances and furniture showed wear. Ask for maintenance records or have a mechanic look it over and enjoy. Also check to see if it has an hour meter along with the odometer. Mine had been in storage but based on the hour meters the previous owner did run the motor and the generator periodically.