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Faint but stubborn water spots and some minor scratches on two Audis.

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  • #1

    Faint but stubborn water spots and some minor scratches on two Audis.

    I haven't posted here since this site was neon green...

    I've had a few cars since I joined here so long ago. Now I have two Audis where the paint is top quality, very resilient but also very hard. So hard that I can't get the imperfections out using the method below.

    I've always the PC method Mike Phillips offered here which was:

    Clay bar
    #83 at 5
    #80 at 5
    NXT at 2 or 3
    All with separate yellow Meg's polishing pads.

    This method can't get out the water spots, nor the minor scratches on the hood of our Q7. They are faint and can't really see them unless the car is clean and in the sun or you're looking at it sideways in the garage under flourescent lighting. Mike had said in the past that the most aggressive product you could use w/ the PC is #83. Now that it's so many years later are there any other products/methods I can use with my PC that could get these water spots and scratches out?

    Thanks,

    Randy
    Tags: None
  • #2
    Re: Faint but stubborn water spots and some minor scratches on two Audis.

    Most agressive now would be #105, with the polishing pad.
    2017 Subaru WRX Premium - WR Blue

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    • #3
      Re: Faint but stubborn water spots and some minor scratches on two Audis.

      just thought id ask..but is the burgundy cutting pad even necessary with M105 ? i know meguiars recommends the polishing pad with M105 for the G110 DA, what about the burgundy ? they dont recommend it with any product that is DA approved, so i am assuming its only meant for really HEAVY scratches and swirls
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      • #4
        Re: Faint but stubborn water spots and some minor scratches on two Audis.

        The new cutting pad (2.0) is a different foam than the old one, and can be used with a DA. But you are getting very agressive for a DA, and certainly may not leave the finish as perfect.
        2017 Subaru WRX Premium - WR Blue

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        • #5
          Re: Faint but stubborn water spots and some minor scratches on two Audis.

          i see...so the polishing pad is really all this is needed to achieve great results
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          • #6
            Re: Faint but stubborn water spots and some minor scratches on two Audis.

            Originally posted by speed3blackmica View Post
            i see...so the polishing pad is really all this is needed to achieve great results
            Well, who knows what might be needed, every situation is different.... But in most cases, even if a person thinks they have bad swirls/scratches, the cutting pad with a DA shouldnt be the first thing to try.

            As a side note, the cutting pad + bonnets can be used to remove wax with the DA.
            2017 Subaru WRX Premium - WR Blue

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            • #7
              Re: Faint but stubborn water spots and some minor scratches on two Audis.

              good to know...thanks for the info
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              • #8
                Re: Faint but stubborn water spots and some minor scratches on two Audis.

                Originally posted by Murr1525 View Post
                Most agressive now would be #105, with the polishing pad.
                Would you say set at 5? Also should 205 be used after 105 or should I go back to my old method of #83 to #80?

                I just looked at the hood again and it's need some work as I haven't polished the car since early this year, and I live in Oregon...

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                • #9
                  Re: Faint but stubborn water spots and some minor scratches on two Audis.

                  #105 may leave the finish perfect, never know. If it needs followed up, #205 or #80 are both options. Of course the #205 is the new technology, but you can use up what you got.

                  As far as the speed, yeah, normal paint cleaner speed, 5 is good. Of course do a test spot, get your technique down before doing the whole car.
                  2017 Subaru WRX Premium - WR Blue

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                  • #10
                    Re: Faint but stubborn water spots and some minor scratches on two Audis.

                    Originally posted by Murr1525 View Post
                    The new cutting pad (2.0) is a different foam than the old one, and can be used with a DA. But you are getting very agressive for a DA, and certainly may not leave the finish as perfect.
                    Actually, we still don't recommend the W7207 Soft Buff 2.0 cutting pad for routine use on the D/A. If you really feel the need to step up to this pad for some specific problem areas then that's OK, just be aware that this combination may leave the paint looking a bit hazy.

                    When used long term there is something else going on here that can be a real issue: there is more drag when using a cutting pad on a D/A than with less aggressive pads. Most people tend to use a cutting pad more aggressively than they do a polishing pad, for whatever reason. That often means higher speeds and/or more pressure. Combine these things together and, over time, you can start to break down the hook & loop backing. This breakdown can be two fold - the physical action of a D/A polisher means the pad is constantly changing direction, putting a lot of energy into the hook & loop, literally trying to rip them apart with every oscillation. That builds up a lot of heat - much more than what a rotary does - and starts to break down the hook & loop material. That same heat can start to degrade the bond between the laminated backing of the pad and the pad itself - even with the new 2.0 attachment system. With light use this isn't an issue, but if you start hammering away with this combination, things can start to degrade.

                    If you have both a rotary and a D/A, check what happens to the backing plate on each when used aggressively. Run your rotary with a wool pad a strong compound at 1800 rpm for a few minutes and feel the temp of the backing plate. It's not going to be very warm at all - the bulk of the heat generated by rotary use comes from the friction of the pad against the paint. A foam pad will create more heat here than a wool pad will, but it still won't generate a lot of heat at the backing plate. Run a foam polishing pad at speed 5 on a D/A for several minutes and then check the backing plate. It will be quite warm, noticeably warmer than on the rotary. Get real aggressive with the D/A and the heat builds rapidly. You don't get a lot of heat where the pad and paint come together when using a D/A (a major safety factor with this tool) but you can get plenty at the pad/backing plate junction. Sometimes you can get too much.

                    Originally posted by speed3blackmica View Post
                    i see...so the polishing pad is really all this is needed to achieve great results
                    It really should be, provided your technique is good and you're using the right liquid. Read through Kickin Griffin's post about using this pad with something as mild as M205 to remove defects from the hard paint on a Mercedes Benz. He did not have Ultimate Compound available to him so when he found himself in need of something between M205 & M105 he reached for a competitors product, but UC most likely would have gotten the job done - with the yellow polishing pad and the G110 (he was using the G220, which is simply the European 220 volt version of the same machine).
                    Michael Stoops
                    Senior Global Product & Training Specialist | Meguiar's Inc.

                    Remember, this hobby is supposed to be your therapy, not the reason you need therapy.

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                    • #11
                      Re: Faint but stubborn water spots and some minor scratches on two Audis.

                      Mike thank you for the info...i also did forget that even the more pressure you put on the DA, makes more aggressive cut..i understand your information now, thanks again
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                      • #12
                        Re: Faint but stubborn water spots and some minor scratches on two Audis.

                        Good to know. Thanks Mike.
                        2017 Subaru WRX Premium - WR Blue

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