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should I undercoat my 2020 Mazda 6 touring

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I read Mazda has had rust issues, should I undercoat my 2020 Mazda 6 (northern car) or am I good with weekly underbody cleaning in winter? BTW spent 23K$ out the door 1200 miles on the odometer, it was the dealer loaner, how'd I do? Thanks Scotty!

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4 Answers
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I don't think undercoating will help you much, especially on a unibody car. Just try to keep it clean and free of salt.

 

 

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Yes, absolutely you want to get the car done. What you want is something that is oul based such as Rust Check, Krown, and Fluid Film. I use Rust Check myself. What you don't want is something tar or rubber based. South Main Auto Repair made a video demonstrating why.

https://m.youtube.com/watch?v=nXvl9nt57Kg

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What some folks up north do is a periodic (winter) coating with Fluid Film or New Hampshire Oil. From what I've seen, it seems to help.

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back in the day up in Chicago, we would get our cars treated by Ziebart rust proofing. Don't know if they are still in business tho.

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