Undercoating Options
Thread Starter
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5th Wheeling
Joined: Jul 2024
Posts: 31
Likes: 3
Undercoating Options
2022 F250. 43k miles. What would be some options for undercoating? I have read wool ive heard oil! Wondering which one is best! Also, how to treat surface rust on components like diff housing.. not sure i can wire brush it all off.. thanks..
Fleet Mechanic
Joined: Mar 2021
Posts: 1,642
Likes: 1,327
Krown is the way I went.
2013 has zero rust. I have it sprayed once a year before the first salt application.
https://www.krown.com/en/
2013 has zero rust. I have it sprayed once a year before the first salt application.
https://www.krown.com/en/
Fleet Mechanic
Joined: Nov 2015
Posts: 1,670
Likes: 667
From: DeMotte, IN
Was a report recently on how well the aluminum bodies are holding up in the rust belt. No reason for undercoating IMO. As for the rust, there appears to be many “rust converters” on the market. I would research those. I used Rustoleum rust converter spray paint on a section of the gate on my dump trailer and it appears to be doing OK after about 3 months being stored outside. Wire brushed by hand before I applied it.
More Turbo
Joined: Mar 2024
Posts: 736
Likes: 303
From: SE Vermont, South Jersey
I have been using Waxoyl - professionally applied and then touched up every year. I used it on 2 RAMs and now the Ford. The first RAM is now 10 years old and owned by my son. Looks new underneath. My son has done the touch-up himself the 5 years he's owned it.
https://www.waxoyl-usa.com/
https://www.waxoyl-usa.com/
Cargo Master
Joined: Jan 2004
Posts: 2,419
Likes: 694
From: Minnesota
Why worry about surface rust? Look at how many old trucks are surviving just fine. Your differential is never going to rust through . . . . . a frame would take decades. Your truck will be well worn out before rust is ever a factor.
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Hotshot
Joined: Oct 2015
Posts: 19,676
Likes: 12,797
From: Wyoming
POR15 works great but is pricey. On the plus side, it only takes one application and you're set. I've used it on air cooled VW floor boards.
I would rather do a once and done treatment. But it's more time consuming to go the POR-15 route. I use Woolwax on my wife's car. It's pretty quick to do that, relative to the time POR-15 takes.
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Tuned
Joined: Sep 2019
Posts: 413
Likes: 285
From: N. Appalachistan
Another vote for Krown if you have one in your region. That stuff is great.
Every year when I get my truck sprayed I buy a case of Krown aerosol and use it for spot treatment on trailers & equipment & stuff.
Every year when I get my truck sprayed I buy a case of Krown aerosol and use it for spot treatment on trailers & equipment & stuff.
Mountain Pass
Joined: Dec 2019
Posts: 200
Likes: 63
NH Oil..... On my 22 F350..... It's been great here in the middle of N.Y. Home - NH Oil Undercoating
Cross-Country
Joined: Apr 2023
Posts: 85
Likes: 25
Lots of off roaders use this stuff. if you’ve ever purchased military surplus, firearms, packed in cosmoline you know how well it works as a preservative.
https://www.cosmolinedirect.com/cosm...st-preventive/
https://www.cosmolinedirect.com/cosm...st-preventive/
Thread Starter
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5th Wheeling
Joined: Jul 2024
Posts: 31
Likes: 3
Wow! Lots of options. It looks like based on my location in the city, i may end up, tackling this undercoating myself. Now, how would I go about removing the existing surface rust on like I mentioned earlier differential cover I cannot reach the top portion of it, and I can only wire brush so much but in between the nooks like cooling fins etc.. should i just spray on top?
Hotshot
Joined: Oct 2015
Posts: 19,676
Likes: 12,797
From: Wyoming
Wow! Lots of options. It looks like based on my location in the city, i may end up, tackling this undercoating myself. Now, how would I go about removing the existing surface rust on like I mentioned earlier differential cover I cannot reach the top portion of it, and I can only wire brush so much but in between the nooks like cooling fins etc.. should i just spray on top?
Lead Driver
Joined: Jul 2003
Posts: 9,348
Likes: 1,714
From: AKRON ohio
