Undercoating Recommendations?
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Undercoating Recommendations?
So I've had my truck for about 3 years now. And ever since I got it I have always sprayed Rust-Oleum Rubberized Undercoating on everything under the truck once or twice a year. I originally did it because I just didn't want to look at the rust coating everything under my truck. And I've also been told it will help slow down the rust.
But It seems like It just flakes off after about after a year or so. I know the best way to do it is to strip it clean of all the rust, but this is my only truck, and I'm too busy right now to strip everything under there.
So I guess what I'm asking is, is what I'm doing ok? Or am I just trapping moisture with the undercoating and making things worse?
But It seems like It just flakes off after about after a year or so. I know the best way to do it is to strip it clean of all the rust, but this is my only truck, and I'm too busy right now to strip everything under there.
So I guess what I'm asking is, is what I'm doing ok? Or am I just trapping moisture with the undercoating and making things worse?
Senior User
Joined: Feb 2003
Posts: 162
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From: Cleveland
While not quite as effective as undercoating, I've been using Sprayon 777 Outdoor Metal Protectorant. It's good for inside door panels, tail gates, and other places filled with nooks and cranies that get moisture but not a full washdown like the wheel wells do. Good for the inside of the frame rails.
I apply it once a year, usually in August when the weather is driest.
Sprayon - Product Information - OUTDOOR METAL PROTECTANT
I apply it once a year, usually in August when the weather is driest.
Sprayon - Product Information - OUTDOOR METAL PROTECTANT
Fleet Owner
Joined: May 2009
Posts: 21,437
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From: Gilbert, PA
I suggest power washing EVRY LAST SPECK of undercoat off, sanding, grinding or sandblasting the frame(I suggest sandblasting) then use a QUALITY paint.NOT undercoat
More Turbo
Joined: Dec 2007
Posts: 641
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From: Umicorn UtopiaFantasyLand
What about POR-15? After getting everything sandblasted,or however you get it clean, this is what most use that I know. I ordered some the other day.
POR-15 Semi Gloss Black Quart
POR-15 Semi Gloss Black Quart
Last edited by eagle275; May 19, 2013 at 02:14 AM. Reason: sp
Post Fiend
Joined: Nov 2005
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From: Charles Town, W bygod Va
I've been using this rust reformer, but not long enough to give you any long term results. It seems to be just the right thing, short of sandblasting.
Heres a rust repair thread I made a while back if you are interested.
https://www.ford-trucks.com/forums/1...pair-pics.html
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Thanks for the help guys 
That's what I was afraid of. 
I would like to be able to take the time to strip it and sandblast everything, but it is my daily driver and my only means of transportation.
I'll probably give this a shot after I get whats left of the undercoating off.
I would like to be able to take the time to strip it and sandblast everything, but it is my daily driver and my only means of transportation.
I've been using this rust reformer, but not long enough to give you any long term results. It seems to be just the right thing, short of sandblasting.
Heres a rust repair thread I made a while back if you are interested.
https://www.ford-trucks.com/forums/1...pair-pics.html
Heres a rust repair thread I made a while back if you are interested.
https://www.ford-trucks.com/forums/1...pair-pics.html
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Joined: Sep 2001
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More Turbo
Joined: Dec 2007
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From: Umicorn UtopiaFantasyLand
POR-15 is to seal the frame,etc. and is really good stuff Eastman carries it. Anytime you do anything like this, prep is so important. Prep very good on your frame and all metal and sprayed, and brush my frand supports,etc. Put POR-15 on with a brush or spray, i used a brush, let it dry good. Then I got Lizard Skin and sprayed my engine bay and used a brush and spray underneath the whole body,the inside of doors,etc,with panels off,etc. and where ever you think you want to sound proof and protect from high heat. This stuff can withstand temps up to 500-800 degrees. There was a picture on their site where an old ****** had been done and the garage burned up, and it was saved because of Lizard Skin coatings. Racers use it too for heat and sound deadening. On the POR-15 study what you want to do,etc and talk to Eastwood tech & cust svc. & Lizard Skin cust svc.
POR-15 Super Starter Kit
POR-15 Semi Gloss Black Quart
POR 15 Black Velvet Hi-Temp Paint 16 oz pint
POR 20 High Temp Aluminum Paint 16 oz pint
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POR-15 Super Starter Kit
POR-15 Semi Gloss Black Quart
POR 15 Black Velvet Hi-Temp Paint 16 oz pint
POR 20 High Temp Aluminum Paint 16 oz pint
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Mascoat Transportation Thermal Insulation - Auto Insulation | Mascoat
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From: eastern connecticut
The best thing that me and my dad have found is spraying drain oil on the under carrige, first its free if you change your oil and it protects just as good as any. It is a little messy though but we just park the trucks on the dirt and let them drain. A lot of people say it dont work, well it does cause after going through winter with all the crap on the roads my jeep and my dads truck look the same and we both plow as well
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What would be the easiest way to get it off? I'm not sure my pressure washer will be able get rid of it all.
Hotshot
Joined: Sep 2001
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Try the pressure washer. A heated one may work better, if you can borrow one. I usually just had to scrape it all off. A friend of mine used aircraft stripper on his car, but that could get expensive.
Post Fiend
Joined: Nov 2005
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From: Charles Town, W bygod Va
I always wanted to try hooking up to the drain on the water heater with a pressure washer... should work pretty good.
Fleet Owner
Joined: May 2009
Posts: 21,437
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From: Gilbert, PA
Dont. It will wipe out the pump. They are Not designed for hot water
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