Self Levelers

Don't lube with anything that stays sticky. Spray them with silicone before you retract. It washes off the sand and protects the seal.

Esacnj,
First off, those hydraulic cylinder rams are not going to corrode out from underneath your coach in 10 minutes. It takes quite a while for even the start of a rust point to start to take effect. Even in the Salt air environment, it still takes quite a bit of time. I'm not talking years, but more like a month or so before it really starts to show. Now, different metals tolerate harsh environments differently. Stainless steel can handle a harsh environment without show of a any signs of corrosion for considerably longer than say, regular chrome which, is merely a coating anyway.

Uncoated aluminum (non anodized) will show signs of corrosion considerably faster than anodized aluminum. Raw steel, that's been ground or sanded to reveal it's shiny state, will show signs of corrosion in a salt environment in anywhere from 24 hours and beyond.

Those rams, on your levelers are either Stainless steel, a form of non polished chrome or other coatings that resist deterioration and corrosion. That's not to say they won't ever corrode or rust, but, they can withstand fairly harsh environments for longer than you think.

But, if you are really concerned, and you don't want to get down and crawl around trying to do some sort of maintenance on them, then just run them back up fully and back down to re-level your rig, about once every week to two. That will automatically "wipe" off any starting points of corrosion/rust. I mean, you're in it anyway, so, that process will take very little time and you will satisfy your worries. It's not like you have to drive to your coach in storage 50 miles away to do the process. Good luck.
Scott

Most of the hydraulic shafts are raw metal, so when coating the jacks, tow bars etc, also remember to coat the hydraulic struts holding up your basement doors and engine compartment hatches. the strut arms are usually chromed, but that protection has its limits.

Best thing to do with your levelers is to treat them as the manual for your particular levers says.

We winter near the ocean but are close to and behind a high building. We are still exposed to salt air though and high humidity.

With ours (HWH), I give them a wipe down with a clean dry cloth then a quick shot of silicone spray, the same that I use on our Roadmaster Towbar.

Ive farmed 45 years. I had one big sweep plow with 10 cylinders. We had very few problems, although it would wear over time. Thr ouside seal is a wiper so of course its job is to clean off the shaft. The biggest problem are bear shafts out in elements during off season. Over time the shaft would pit and cause seal to leak. We would coat them would stuff designed for that purpose.

worse yet is the corrosion that the sea salt will do to them!