Spring is a great time to give diesel motor homes a good bath. Start with the roof and work your way down. Use a non-caustic product to clean the rubber on the roof, like Spic and Span. For tough stains, try Murphy’s Oil Soap and a medium-bristle brush. This is a good time to check caulking around vents, seams and antennas. It’s also a good time to inspect the plastic vent lids and skylights for deterioration and cracks.