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Thread: What is this? Can it be stoped?

  1. #1
    Join Date
    Jul 2011

    What is this? Can it be stoped?

    After some advice.

    The picture is the rear bar of a Golf just after a wash. What I'm finding is that it is constantly covered in these rough orange looking specs. I have no idea where they're coming from. I can clay bar them off however it is very difficult (ie stubborn) and they only return a few weeks later.

    Any ideas on how I can minimise these? A wax coating? and ideas?
    What is this? Can  it be stoped?-20210107_074628415_ios-jpg
    Last edited by minke; 08-01-2021 at 05:34 AM.

  2. #2
    Join Date
    Aug 2010
    Sydney Northern Beaches
    Users Country Flag
    I have had similar sport in the same place before. I ended up deciding they were a product of combustion and in the exhaust. My solution was to cover that edge of the rear bar with a carbon fiber look vynal sticker.

    I am no expert but I think it is the cat converter dying over time.
    The Car: MY20 Black Golf R Final Edition, 5 Door, Driver assistance package, Sun Roof.

  3. #3
    Join Date
    Feb 2011
    Users Country Flag

    That is tar spots and other junk flicking up (normally after driving in the rain) off the road and bonding to the paintwork. It will be most noticeable on the rear bumper and hatch, although you will also find some up the side of the car where water flicks up off the front wheels when driving in the rain.

    Unfortunately this is normal on hatchbacks and wagons (less so on a sedan).

    The only way to fix it is to claybar the affected area on a regular basis and put a wax or sealant on the paint.

    Something which I find helps it to hose the car off when you get home after driving it in the rain. This will dislodge a lot of the muck before it bonds to the paint.
    2015 Mk7 GTI Performance
    2015 Audi SQ5 bi-turbo V6 TDI family hauler

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