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M105 vs Water Spots

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  • #1

    M105 vs Water Spots

    So most of the homework I've done on 105 seems to be about swirls, scratches, and the like. I've got some PITA water spots on my white truck that refuse to budge. I've used step 1 cleaner (from the consumer line) and some other cleaners and polishes of varying brands with no luck. My paint is actually gorgeous now...literally swirl free under the sun...minus these spots.

    So now I've been thinking of trying the 105/205 combo, bt shy'd away thus far because it's listed as such an agressive product. Butthen everything I seem to read about it would lead you to think otherwise.

    I'd be using with a DA and Lake Country pads of various colors. Is this the product to go with to tackle tough water spots? Something else you guys recommend inbetween?

    What do you think?? Guess do a test spot to start?? What's the word with this against spots on paint that needs no other type repair?

    Thanks guys.
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  • #2
    Re: M105 vs Water Spots

    Going to 105 is probably overkill since you stated your paint is "literally swirl free under the sun...minus these spots" after your other cleaner & polish experiments.

    For the remaining water spots - I would do a test spot with ScratchX and/or Ultimate Compound on a DA with a polishing pad. If that doesn't work - time to post some pix to see how bad the water spots are.
    Andy W.
    Bimmers - '72 Tii, '74 Tii, '88 M3, '91 318is, & '01 330i
    Ford - '91 Ranger

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    • #3
      Re: M105 vs Water Spots

      Yea, I figured if I did try the 105, I'd use a mild pad with it...my Lake Country either white or green, and run the speed no faster than what would do the job. Start on 3 or 4.

      It very wierd, cause after inspection on the first clean up, it looked like they were gone. Then after a couple days and one more normal wash job, BAM, they were back in force.

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      • #4
        Re: M105 vs Water Spots



        This was taken from the 2010 Meguiar's Retail Catalog.

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        • #5
          Re: M105 vs Water Spots

          Just so you are aware, the Deep Crystal Cleaner, which is discontinued in the US, is very very mild. You wont remove much of anything with it.

          SwirlX is where you would start to get the removal ability, then up to UC if needed.
          2017 Subaru WRX Premium - WR Blue

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          • #6
            Re: M105 vs Water Spots

            Originally posted by Murr1525 View Post
            Just so you are aware, the Deep Crystal Cleaner, which is discontinued in the US, is very very mild. You wont remove much of anything with it.

            SwirlX is where you would start to get the removal ability, then up to UC if needed.
            I agree. I was going to add a comment to the post above. UC seems a little overkill unless they are really bad.
            I think Meguiar's wanted to list something that has a pretty good chance of removing the water marks.

            The main thing I wanted to show is Meguiar's doesn't initially recommend something as aggressive as M105.

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            • #7
              Re: M105 vs Water Spots

              I recently removed some pretty nasty water spots on my Porsche Cayenne (soft paint on the hood, but SwirlX wasn't doing it) with UC on a polishing pad. It took a couple passes, but it worked! Go slow.
              Composers shouldn't think too much, it interferes with their plagiarism. -- Howard Dietz

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              • #8
                Re: M105 vs Water Spots

                SwirlX will not touch water spots on my (repainted) hood. I always have to use Ultimate Compound. M105 would, of course, also work, but I so strongly prefer UC whenever possible, because of its longer working time and because it does not dust the way 105 does.

                It all depends on the paint. There's only one way to find out which polish will get the job done--experimentation.
                Swirls hide in the black molecular depths, only waiting for the right time to emerge and destroy your sanity.
                --Al Kimel

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                • #9
                  Re: M105 vs Water Spots

                  What is UC?

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                  • #10
                    Re: M105 vs Water Spots

                    Originally posted by galaxy View Post
                    What is UC?
                    Ultimate Compound. It's from the Gold Class consumer line of products.

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                    • #11
                      Re: M105 vs Water Spots

                      Originally posted by galaxy View Post
                      What is UC?
                      It's Ultimate Compound. The Consumer lines answer to 105. Not as aggressive as 105 but as stated above has a longer work time. You can find it pretty much anywhere they sell Meguiar's stuff, Wal-Mart, AutoZone, NAPA, etc.

                      I reach for it if 205 doesn't have enough bite to remove a defect before I try 105.

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                      • #12
                        Re: M105 vs Water Spots

                        Originally posted by akimel View Post
                        SwirlX will not touch water spots on my (repainted) hood. I always have to use Ultimate Compound. M105 would, of course, also work, but I so strongly prefer UC whenever possible, because of its longer working time and because it does not dust the way 105 does.

                        It all depends on the paint. There's only one way to find out which polish will get the job done--experimentation.
                        Originally posted by Blown F-150 View Post
                        It's Ultimate Compound. The Consumer lines answer to 105. Not as aggressive as 105 but as stated above has a longer work time. You can find it pretty much anywhere they sell Meguiar's stuff, Wal-Mart, AutoZone, NAPA, etc.

                        I reach for it if 205 doesn't have enough bite to remove a defect before I try 105.
                        The above two comments are very wise.

                        Water spots can vary widely, from super easy to remove to darn near impossible and everything inbetween. Unfortunately there is no simple "use this to fix that" sort of scenario that works 100% of the time, partly because water spots can be so different but also because paint systems are so different.

                        But starting with M105 (or going from DC 1 straight to M105) is the wrong approach. There are plenty of steps in between, SwirlX and UC being the most likely candidates.
                        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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                        • #13
                          Re: M105 vs Water Spots

                          I had some pretty bad water spots after a week at the beach. I washed, then used SwirlX with the yellow Meguiars pad on speed 5 with the DA. This worked for the vertical surfaces, but needed Ultimate Compound on the roof and hood to totally get rid of the spots.

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