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    What is this made of?

    I previously posted a messgae on the board about tar stains on the sills and rear wheel arch protector on my car. Porsche state this is acceptable wear and tear and the rear arch protector will need to be replaced.

    What I don't know is what is the bottom part of the sill made up of. I have attached an image below of the part of the sill (stained) I am referring to. Is it protection film or just the bodywork? Can anyone help?

    Re: What is this made of?

    Isn't it the galvanised, paint recovered lower part of the body?

    Re: What is this made of?

    This is used on many cars. In fact our For Ka has the same protective film on the lower part of the car. Dunno what it's made of, but I'd say some silicone-plastic compound.
    Made to protect from small chips from stones, road debris etc...it's supposed to protect from rust.
    As far as I know all Porsches are galvanized, so Im not quite sure why it's needed.

    Re: What is this made of?

    looks like that waxy protectant stuff. It easily rubs off with some mineral spirits or kerosene.

    If it is actually a stain I would try oxalic acid or clorox: no kidding.

    A very brief wipe with acetone or MEK would be a last resort. (sounds dire, but it isn't, the area is inconspicuous therefore safe to use these stronger solvents)

    Could be rust stains from someone grinding steel nearby. The hot steel sparks will embed in nearby surfaces and eventually rust. Remove with retail rust remover solutions.

    The most probable? There was some contaminant UNDER the coating when it was applied. The contaminant migrated thru the silver coating. Use touch up paint and hope it stops migrating? if it does try a serious "blocking" primer first. Can all be done with tiny brushes.

    Re: What is this made of?

    Wear and tear, How old is the car? I have had 4 cars with this protective stuff, and never had any bleed thru, if that's what they are implying.

    Re: What is this made of?

    Have only had the car 4 weeks, so you can imagine how impressed I was with the suggestion of wear and tear!

    It has definitely been caused from something on the outside leaking in, rather than inside out, as I removed most of the surface contaminant before noticing the underlying stain.

    Pictures are going to be sent by the dealer to Porsche UK to see if a warranty claim can be made. It was suggested however that 'this is just one of those unfortunate things' and I will have to foot the cost! What do you think?

    Re: What is this made of?

    Stewart, I think this is above all of our heads (especially my little pea-sized brain). If I had this problem, I would go to the best auto body shop (one that does exotic cars or restores antiques) around and ask for a second opinion on potential solutions. Yup.

    Re: What is this made of?

    I thought your problem was on the 3M film. Is that directly on your lower rocker paint?? If so, have you tried a medium or light-cut polishing compound?? Like Meguairs #2?

    Re: What is this made of?

    Those stains will come out w/ a petroleum-bsed product - try WD40 or similar. Never use acetone as suggested above. You may even try olive oil.

    Re: What is this made of?

    I'm amazed! Did Porsche actually say that it was acceptable wear and tear after 4 weeks??? Isn't it like at least 1-year warranty on paint? Your dealer should take care of the problem and kiss your shoes ten times and say they're sorry!

    Re: What is this made of?

    Quote:
    K-H said:
    I'm amazed! Did Porsche actually say that it was acceptable wear and tear after 4 weeks??? Isn't it like at least 1-year warranty on paint? Your dealer should take care of the problem and kiss your shoes ten times and say they're sorry!



    So are you saying that any stone chips in the paint are covered in the warranty for the next year?

    Re: What is this made of?

    Exactly, are you saying that if a truck full of hydrochloric acid wrecks on an overpass and spills onto my Porsche, that I should then blame my Porsche's paint? We have no idea what this mystery substance was that Stewart had the misfortune to zip through. It's unfortunate, but it's not the type of thing that you can aim blame at with the exception of whoever the dolt was that allowed for the substance to spill onto a public road. I've had similar "mystery goo" accidents with my vehicles. Most recent was on my trusty Ford Lightning truck, where upon removing several "dots" of goo with a safe commercial tar & tree sap remover, I discovered that the goo had eaten through the paint straight down to the primer, such that I had to fill-in the little 2-3 mm holes in with my touch-up bottle. I didn't go wailing to my Ford dealership, it wasn't their fault that I ran over some weird chemical. Sometimes lousy things happen to your car when you drive them. How many of us have gotten paint overspray on our cars from a nearby construction sight or highway construction?

    Anyhow, Stewart, given your inability to remove those stains, I'm going to "guess" that the likely culprit was either non-synthetic DOT brake fluid, or battery acid from a cooking battery or one with a cracked case, spilled on the road.

    Re: What is this made of?

    No not stone chips. but those aren't stone chips are they?

    Re: What is this made of?

    Quote:
    69bossnine said:
    Exactly, are you saying that if a truck full of hydrochloric acid wrecks on an overpass and spills onto my Porsche, that I should then blame my Porsche's paint?



    yes, that's exactly what I'm saying...

    The thing is I had paint that fell of in the exact same region on my car (only a boxster tough) after 2 years. My dealer took care of it. But what do I know...

    Re: What is this made of?

    Paint "falling off" is a completely different situation than paint coming in contact with an aggressive substance. Paint adhesion is dependent upon preparation prior to application.

    Re: What is this made of?

    Quote:
    69bossnine said:
    Paint "falling off" is a completely different situation than paint coming in contact with an aggressive substance. Paint adhesion is dependent upon preparation prior to application.



    I agree

    Canker sores erupting from beneath the finish are Porsche's workmanship problems.

    Craters whacked into the top surface of the finish amounts to battle damage ... and, unfortunately, is your problem.

    Re: What is this made of?

    Quote:
    K-H said:
    ...Isn't it like at least 1-year warranty on paint? ...


    The paint has a three year warranty at least for the US.

    Re: What is this made of?

    What your photograph shows is a spray-on protectorant commonly known as "rockguard". Normally applied by the vehicle manufacturer before the application of the paint topcoat. It may be either a one part urethane or vinyl depending on product manufacturer. If the staining is the result from some surface applied material ie tar, asphalt etc., use 3M General Purpose Adhesive Cleaner, part number 051135-08984. Commonly available in the US at most automotive supply houses. Should be available in the UK. The solvent is very mild and would not damage paintwork. I have utilized it for removing foreign matter from synthanol enamel. If however the staining is bleeding through from the backside, it is imperative that you investigate if mositure is entering into the sill. Needless to say that must be corrected before long term damage is inflicted.

    Re: What is this made of?

    Connoisseur, Thanks for this top tip. Regretfully nothing else has worked, so I'm pinning my hops on this! I'll see what Google can find for the uk.

     
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