Speaking of which, just two days ago I had our DP serviced at a Cummins Coach Care facility. At 62,000 miles, it was time for a 'big' service.
-Engine oil and oil filter change (8.9 liter engine)
-Fuel filter change (2)
-Complete Onan generator service (488 hrs.)
-Front wheel bearings packed (every 30K)
-Repair on 1 yr. old coolant box (needed epoxy on two top fittings to keep from leaking)
-Chassis lubed
-Purchased two new fuel filters to keep on hand
Total bill including tax $1,100. I found that to be reasonable as I can go at least 10,000 miles between oil changes. Chassis is lubed every 5,000 miles ($150 or so).
MM.