Join Date: May 2009
Location: Orange County, CA
Thanked 20 Times in 16 Posts
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I am in CA so rust is not as much of an issue here but every oil change I will crawl around under the truck and check for any rust spots near welds, frame and chasis joints and suspention areas and just give them a good cleaning with a stainless wire brush till I hit clean metal then 2 coats of Rustoleum Rust Kill primer in flat black. Seems to do the trick and I have not had to redo any areas yet and it's a 2008. A final coat of gloss or semi gloss black after the primer dries doesn't hurt either.
I do not recommend useing por-15 or bedliner spray to stop rust on bare metal. Both those products are great and I use them both but they are not as much of a flowing liquid as spray paint is and don't seem to get into scratches, chips and weld seams as well as spray paint. Also I find on bare metal both products mentioned can still get moisture or condensation behind them and devlop rust behind the coating which you won't notice till a bubble forms or it chips off and you see the rust. If you do use these go with a base coat of rust killing primer first then use them as a protective coat for that.