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  1. #1

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    Cleaning easily stained black plastic *pics*

    I have no idea how or why GM used this type of finish on the hatchback panels on my car.

    It appears that the plastic has some etching done to it from water spots and general just stains ?

    I included some before and after pics - the after pics is after I tried 303 and carpro Perl on the plastic.

    *I attempted to clean the plastic first with diluted iso but it made the spots turn white so I got scared of thinking Iíll ruin the whole panel* ? I hope I I didnít ?!

    Iím not sure what to do beside keep
    Coating it with 303 and Perl? As I was making passes with Perl and 303 my white mf kept having brown residue on it.







    After.







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  2. #2

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    Re: Cleaning easily stained black plastic *pics*

    I`ve had success cleaning faded plastics with Meg`s #39 and finishing with Perl 1:3, 303, or a ceramic coating

  3. #3

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    Re: Cleaning easily stained black plastic *pics*

    Has it been painted with an interior plastic paint? I would try a interior cleaner like P&S express or griots interior cleaner.

    I like the recommendation of coating it as it will last longer than 303 or Perl. If it looks good with either Iím thinking will have it looking good.

    Do a test spot on somewhere inconspicuous and if you donít like it I would look into interior plastic paints.


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  4. #4

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    Re: Cleaning easily stained black plastic *pics*

    I doubt it has been painted.

    The car has 8,000 miles and itís a 2007.

    I would imagine it is all original.

    What coatings are you guys referring to ?


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  5. #5
    Mike The Guz's Avatar
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    Re: Cleaning easily stained black plastic *pics*

    That is just the nature of that area if it is not cared for. I would give Meguiar`s M39 a try and see if that helps and then keep it dressed. You could coat it if you like.
    Competition Ready Team 1929 Bentley
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  6. #6

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    Re: Cleaning easily stained black plastic *pics*

    Quote Originally Posted by The Guz View Post
    That is just the nature of that area if it is not cared for. I would give Meguiar`s M39 a try and see if that helps and then keep it dressed. You could coat it if you like.
    Makes sense. Not too many people pay attention to the underside of a hatch lol. Right now itís just sitting there with the Perl and 303 on it.

    Iím just scared if I destroyed it with the alcohol wipe down (diluted 10:1)


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  7. #7
    Mike The Guz's Avatar
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    Re: Cleaning easily stained black plastic *pics*

    My uncles C5 and my brothers ex had the same issue. I coated one of them with DLUX but I could not remember which one.
    Competition Ready Team 1929 Bentley
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  8. #8

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    Re: Cleaning easily stained black plastic *pics*

    How did it hold up ?


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  9. #9
    DETAILED TODAY? PA DETAILER's Avatar
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    Re: Cleaning easily stained black plastic *pics*

    Mothers Back to Black Heavy Duty Trim Cleaner

    Might make it look better. And bring back the look. I would try a small area first and observe the results...

    You would have to mask off, but this may also do the trick...

    Chemical Guys Black on Black

    A deep cleaning would be done by the following. Read it`s one of the best plastic cleaners.

    Nextzett Plastic Vinyl Deep Cleaner Plastik Reiniger - 500 ml
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    www.autiopia.org
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  10. #10

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    Re: Cleaning easily stained black plastic *pics*

    Iíll try the megs cleaner for sure as I do like their stuff. My main concern was if the diluted iso caused any damage


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  11. #11

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    Re: Cleaning easily stained black plastic *pics*

    I can`t imagine even straight IPA would do anything (damage-wise) to that plastic. The problem with "water spots" like that is that you don`t really know what it is. For instance, if that`s hard wash/rinse water that`s dried on there and is effectively a hard water spot, water or IPA won`t do anything to remove that. You could use something slightly abrasive, but then you risk changing the gloss in that particular area. Something like KAIO, which Accumulator likes to refer to as "functionally non-abrasive" would probably work well, but again, you might have to do the whole panel to get a uniform appearance.

    But it might be spots from something else. If you using KAIO or the Meg`s #39 you`d probably want to do the whole piece anyway, maybe you`ll be able to get that mark off from the hatch seal. Put some 303 or Gummi Pfledge on the seal so it sticks/transfers less.
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  12. #12

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    Re: Cleaning easily stained black plastic *pics*

    Quote Originally Posted by Setec Astronomy View Post
    I can`t imagine even straight IPA would do anything (damage-wise) to that plastic. The problem with "water spots" like that is that you don`t really know what it is. For instance, if that`s hard wash/rinse water that`s dried on there and is effectively a hard water spot, water or IPA won`t do anything to remove that. You could use something slightly abrasive, but then you risk changing the gloss in that particular area. Something like KAIO, which Accumulator likes to refer to as "functionally non-abrasive" would probably work well, but again, you might have to do the whole panel to get a uniform appearance.

    But it might be spots from something else. If you using KAIO or the Meg`s #39 you`d probably want to do the whole piece anyway, maybe you`ll be able to get that mark off from the hatch seal. Put some 303 or Gummi Pfledge on the seal so it sticks/transfers less.
    Does m39 stain or discolour plastic ? I would guess it doesnít seeing as itís made specifically for this purpose ?


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