What do you use to clean your topper?
There are a few very good weak acid sprays you should use to remove oxidation, etc from your topper. You can find them at any welding supply store. It does not interfere with truck paint etc. You simply spray on, wipe down with a sponge or for stubborn stains, use a special nylon-type pad. Remember that with stainless you will want to always scrub or buff with the grain of the metal, not against. After you scrub, simply hose it off your topper. Then to keep it looking new I use a stainless spray cleaner/polish that you can buy at any reputable auto store.Frame is aluminum rest is stainless