Don't drive on salt treated roads. The steel frame work and suspension are not protected against salt exposure. Other than that, keep corrosion at bay by wire brushing any heavy corroded areas and paint/touch up areas not still black with Rustoleum flat black including frame, propane plumbing, axles and springs. Use gloss black on bumper,and tougue/pin.
This keeps my rig protected and looking good.
Steve Rinker
Rochester, NY
2013 Keystone Sydney 340FBH 5th Wheel, 12,280 lbs loaded (scale)
2015.5 GMC Sierra Denali 3500, SRW, Duramax, CC, Payload 3,700 (sticker- not scaled yet)
Take my posts for what they are, opinions based on my own experiences.