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Undercarriage Rust

This is a discussion on Undercarriage Rust within the Focus RS Discussions forums, part of the Focus RS Forums category; I did my first oil change myself (previous ones were done by dealer/not me) so this was my first time under the car and noticed ...

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    Undercarriage Rust

    I did my first oil change myself (previous ones were done by dealer/not me) so this was my first time under the car and noticed some rust on the undercarriage. I am from PA so obviously there was going to be some rust with the salt they cake the roads with in the winter time. Mine is a 2017 and has seen two winters here. Is this normal/expected or is this something I should be worried about? Sorry about the somewhat crap/out of focus pics.




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    Looks just like mine here in Canada. So did my old ST. Is what it is

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    Quote Originally Posted by 320icar View Post
    Looks just like mine here in Canada. So did my old ST. Is what it is
    That's what I figured, the only thing that was concerning was that it was a piece that was coated/painted that is rusting with the coating/paint pealing up.

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    This is sad and exactly why I don't drive mine in the winter. I know I'm missing out hooning in the snow with the AWD, but I want my RS to last a long time. And that won't happen with all the salt and liquid calcium chloride on our roads here in New York State.
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    Quote Originally Posted by mynameisnick4 View Post
    I did my first oil change myself (previous ones were done by dealer/not me) so this was my first time under the car and noticed some rust on the undercarriage. I am from PA so obviously there was going to be some rust with the salt they cake the roads with in the winter time. Mine is a 2017 and has seen two winters here. Is this normal/expected or is this something I should be worried about? Sorry about the somewhat crap/out of focus pics.



    I found mine just like this after winter 2018. Ford wouldn’t do anything but I worked with my dealer and they cleaned it up and re-painted those sections.


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    Looks just like mine OP North East resident also ...surface rust...most likely from moisture trapped by the under tray...It doesn't bother me.
    Last edited by crepr12; 06-01-2019 at 08:39 AM.
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    That's normal salt corrosion. I had a Krown rust spray applied prior to winter and will do so again yearly. The Krown oil really slows the rust down but it does make a mess. Oil is still creeping out of my hatch from 7 months ago.

    Also check your wheel arches. Right along the edge of the arch is a prime spot for rock chips. Get those cleaned and touched up asap.

    I'm touching up those spots shortly then putting some wheel arch trim on. The trim has an edge that covers the chip prone area. Here's the trim I'm using:

    Dawn Enterprises FG-68025-HG Wheel Arch Moulding (pic attached)

    The trim is 5/8" in height. Pretty low key.
    Attached Images Attached Images  

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    Quote Originally Posted by stvjeep View Post
    That's normal salt corrosion. I had a Krown rust spray applied prior to winter and will do so again yearly. The Krown oil really slows the rust down but it does make a mess. Oil is still creeping out of my hatch from 7 months ago.

    Also check your wheel arches. Right along the edge of the arch is a prime spot for rock chips. Get those cleaned and touched up asap.

    I'm touching up those spots shortly then putting some wheel arch trim on. The trim has an edge that covers the chip prone area. Here's the trim I'm using:

    Dawn Enterprises FG-68025-HG Wheel Arch Moulding (pic attached)

    The trim is 5/8" in height. Pretty low key.
    do you have an installed picture? I also want to protect the arches but don't like anything that looks out of place. like if exaggerated, would they look like wrangler fenders?

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    Quote Originally Posted by stvjeep View Post

    I'm touching up those spots shortly then putting some wheel arch trim on. The trim has an edge that covers the chip prone area. Here's the trim I'm using:

    Dawn Enterprises FG-68025-HG Wheel Arch Moulding (pic attached)

    The trim is 5/8" in height. Pretty low key.
    Also interested in seing pictures once installed.

    I had the same idea for next winter so the rear wheel arch paint hopefully lasts more than one winter this time!

    From the pictures of the trim on Amazon it does not seem so large once installed...

    Would like to keep this as a permanent solution if it looks half decent. Already had paint literally pealing off the rear wheel arches twice in two years! Wonder if the trim-gard colored molding could match the FW close enough. Cant find it on their site though!
    Attached Images Attached Images  
    Last edited by Barroux; 06-06-2019 at 07:03 PM.

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