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Hello, I was thinking about undercoating my a-arms, rear end, and frame around the fender wheels with a rattle can, I was wondering what is the best brand to use ? Or would the bed liner spray be better?
 

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I took mine to a truck accessory shop who does body protection/rustproofing. Paid $160 to shoot the entire underbody (bumper to bumper...wheel wells included). Probably could've saved some bones doing it myself, but it's ball-shrinking cold outside and I didn't have to get anything messy.
 

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I was looking into the same thing. my truck has gone this long without it. I was just thinking the basic chassis undercoating in a rattle can. is there a special kind of prep work or just clean rust off the best you can?
 

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Does undercoating help decrease noise at all?

I've seen advertisements, I think from new car dealers, that claim undercoating brings the noise level down.

Just curious if this was true or not and if it is... is there a particular brand of undercoating that decreases noise better than other brands?
 

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The 3M brand body or rocker schutz coating is the best for sound deadening panels and it requires a special applicator gun for a high build thickness.
 

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Sounds like some good stuff, thanks!

I may do my wife's Cavalier first since that thing needs a lot of help in the road noise area.
 

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This, along with getting superskidz, is definitely on my to-do list when I get back to the states. Lubed up all the body mounts a few months before I left, and while under the truck I was shocked to see how beat up it was. Guess I'll add another item to my list of "Things 355nation has Helped me With" after reading this thread
 

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Do you guys clean the undercoating of your trucks before spraying it on?
Of all the places I'd think you need to do some cleaning before applying some spray-on coating, the underside of a vehicle's right up there.

If you buy something like POR-15 or the 3M stuff, you'll find you're pretty focused on being sure you don't waste it. Surface preparation is the first priority in that direction.
 
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