I spray undercoating at any bare or poorly coated metal, frame weld points, propane lines and any exposed nuts/bolts/screws. I used about 7 cans on our new camper. I coated the steps with spray on bed liner coating as it has non skid in it. I don't have electric steps but I spray Corrosion X on my battery terminals, breakers and any exposed wires/terminals.
2016 Wildwood 32BHDS
2004 F-250 CC 4X4 V10