I need a little help with my new snowmobile trailer. It's black painted aluminum ( enclosed in-line trailer ) and will be exposed to the environmental weather from now until April 1. I live in Michigan and it see's extreme weather and road conditions . Freezing weather with sand, salt, and anything else we use for Ice / snow / slush on the roads in the Midwest.
Can I get some suggestions for sealants ? I have used " Sharkhide " on the bare aluminum, latches, fenders, ect... but now I'm looking for something for the thinly painted exterior.