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Old 10-25-2013, 11:42 PM   #1
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Rustproofing - How do I know if I had it applied at factory?

I will be taking my lovely RV to Texas Gulf Coast next summer. The RV park I'm going to suggested I ensure my underneath has rust proofing. How can I ascertain if my 2013 Sunseeker 3170 has rust proofing on the underside?

I bought mine in an unorthodox way, so I can't ask the dealer, the dealer wouldn't know. The dealer I used was merely an "intermediary" who facilitated a factory order. The particular dealer normally deals in rentals. This dealer facilitated a factory order as kind of a "favor." (Long story)

So, how do I find out if I have rust proofing? I called auto body shops in the Texas town where the RV park is, and they all said, "um.... nobody around here does that......"

I will be spending a few HOT SUMMER MONTHS in the very humid Gulf Coast, I don't want to come back home as a rust bucket.......
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Old 10-26-2013, 12:03 AM   #2
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Originally Posted by DXSMac View Post
I will be taking my lovely RV to Texas Gulf Coast next summer. The RV park I'm going to suggested I ensure my underneath has rust proofing. How can I ascertain if my 2013 Sunseeker 3170 has rust proofing on the underside?

I bought mine in an unorthodox way, so I can't ask the dealer, the dealer wouldn't know. The dealer I used was merely an "intermediary" who facilitated a factory order. The particular dealer normally deals in rentals. This dealer facilitated a factory order as kind of a "favor." (Long story)

So, how do I find out if I have rust proofing? I called auto body shops in the Texas town where the RV park is, and they all said, "um.... nobody around here does that......"

I will be spending a few HOT SUMMER MONTHS in the very humid Gulf Coast, I don't want to come back home as a rust bucket.......
When I was growing up in Upstate New York and they used salt on the roads in winter, rust proofing or "undercoating" was a common practice where a tar like coating was applied to the underside of a preferably new vehicle supposedly to prevent corrosion _ whether it worked depends on who you ask.

Going on that, I would assume that you should see some sort of tar or something similar on the underside of your unit.
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Old 10-26-2013, 12:07 AM   #3
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Thanks, I'll check!
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Old 10-26-2013, 12:11 AM   #4
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Assume you don't have any rust preventative more effective than paint.
Fluid film is a lanolin based rust preventative.
http:// http://www.fluid-film.com/
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Old 10-26-2013, 02:16 AM   #5
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por 15 is a great, if a bit pricey product.

POR-15 Rust Prevention

maybe look for someone that does spray in bed liners. or a large semi truck dealer with a body shop. they for sure would have the space and capabilty to do what your wanting.
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Old 10-26-2013, 08:12 AM   #6
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If you have the Ford chassis, there is no undercoating (chassis wise) just painted metal. If you have the Chevy you likely got the factory dipped undercoating. Forest River paints all add-on metal.
That said, my 3171 is on the Ford chassis and was obviously transported from FR during the winter on salted roads. My entire under chassis was so corroded and not just the chassis but every metal under there. I had rusting, corroded bolts and metal from the hydraulic lifts to the generator. The back hydraulic cylinders and pads were worse than the front (which makes sense being there is more road spray from the rear tires).

It's been a month long project (on weekends and a few hours during the week) but I have cleaned up the entire under-body of the coach, wire brushed the loose rust and sprayed Rust-Oleum under coating (the hydraulic jack pads I sprayed with Rust-Oleum truckbed liner).

I don't see Texas coast being problem for the paint on metal but anywhere you travel that has road salt will wreak havoc on it. Just take it to a self serve car wash and wash the under chassis.

Bobby
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Old 10-26-2013, 11:13 AM   #7
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Had the same issues initially on my Forester 3171... Mine was a late winter build - first Spring I wire brushed all the undercarriage and touched up with a rust stop then top coat from Rust O Leum.
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Old 10-26-2013, 11:22 AM   #8
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Thanks, I'll check!
Just make sure they wash/clean/dry the complete underside before they apply the undercoating. Otherwise, it will come loose and have pockets of moisture doing more harm than if left uncovered. That's why most vehicles that are undercoated are done when at the dealer before they are driven on the road.
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Old 10-26-2013, 02:14 PM   #9
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Ours is a Ford chassis, and all metal surfaces on it were at least painted. Not so the FR additions, a lot of bare metal on cuts etc. They are easy to see because they form a rust coat almost immediately. bgilly has the answer, look under the coach for rusty areas, clean them as well as you can w/ sand paper, then rustoleum rusty metal primer and a coat or two of rustoleum paint. Ours has held for over a year.
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Old 10-26-2013, 02:58 PM   #10
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Okay, so here is the cheapest way to get this done guys. I have used this in the salt roads of the N.E. for the last 10 years, and my pickup undercarriage looks like its new. Buy the gun U Pol Air Undercoat Undercoating Spray Application Gun | eBay or search one you like for the quality and features, add the bottle Undercoating Gun Plastic Bottle, of course you have the compressor. Mix chain saw oil (which is vegetable based for enviroment) and liquid car wax. I go with one fifth wax to chain saw oil in that size bottle. Bend a coat hanger into a beater stick and whip the mix together in a fine "soup"! spread some plastic and have at the under carriage. Your looking at once a year coating with maybe a touch up all for under 60 bucks. Enjoy.
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