How to remove rusty stain on camper
We just got home from camping over the weekend. The campground that we were at had very hard water, so the side of our camper has hard water spots where the water splashed just a bit when I unhooked the city water connection and there is also a rusty streak from where the city water connection was leaking just a bit.
So what is the best way to remove the hard water spots and also the rusty stain from the metal siding on the camper?
TT-2013 Passport 3220BH
TV-2004 F150 FX4, not exactly stock...
with 2001 Kodiak K215: 2010-10, 2011-12
with 2012 Grey Wolf 26BH: 2012-19, 2013-24, 2014-11, 2015-6
with 2013 Passport: 2015-13, 2016-15 booked