Water spot removal

Discussion in 'Detailing' started by clk320x, Jun 22, 2018.

  1. clk320x

    clk320x MB Club Veteran

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    Today I was washing my car, just ready to dry it following the final rinse.

    And a stray dog approached me! So I had to attend to him to find his owner... anyway long story short My car is now covered in white water marks. Which won’t come off even after I rinsed the car again with a hose pipe.

    How do I remove these?

    Thanks
     
  2. DoberMan

    DoberMan Hardcore MB Enthusiast

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    I've got the same problem on the door sills.
    From what I've researched so far, white vinegar diluted with water or clay bar.
    Will be doing mine soon.
     
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  3. Will

    Will MB Club Veteran

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    Failing that, any mild car polish will take them off. The rest will gradually wash away in the rain etc over time :)
     
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  4. Smart320

    Smart320 Hardcore MB Enthusiast

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    Was the dog called Spot?
     
  5. OP
    OP
    clk320x

    clk320x MB Club Veteran

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    Apparently 50:50 distilled water & distilled vinegar in a spray bottle. Spray on and wipe off with a cloth.

    [​IMG]

    Then re-wax!
     
    Last edited: Jun 22, 2018
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  6. wu56Shoozz

    wu56Shoozz Hardcore MB Enthusiast

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    ... and a portion of chips and a pickled egg. :D:D:D:D
     
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  7. Legacy260

    Legacy260 New Member

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    Time to buy a water purifying tube from race glaze or similar suppliers. Just the gadget for rinsing cars in the sun, and no need to dry again.
     
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  8. optimusprime

    optimusprime Hardcore MB Enthusiast

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    This can take some moving but will clear itself over time
     

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  9. OP
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    clk320x

    clk320x MB Club Veteran

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  10. optimusprime

    optimusprime Hardcore MB Enthusiast

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    If water is left on the car to dry this is inevitable .Dont was the car in the heat of the sun .Wait till late evening.But if you must wash it then do it in the shade.But always dry it off after asap dont let it dry on to the paint work
     
  11. Pondman

    Pondman Hardcore MB Enthusiast

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    I was lucky enough to ask for one for Christmas a couple of years back. It’s brilliant (even spotless ;) ) I have refilled it once since then but rinsing off after a soapy wash couldnt be easier. You know when the resin needs to be replaced when the spots return. I’ve recharged mine once in a couple of years detailing. And refills can be of more generic window washer resin than the RaceGlaze specific one (which is identical) and cheaper. It’s a one-off investment that saves you a shed load of effort and grief and really improves the finish after a quick valet :)
     
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  12. OP
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    clk320x

    clk320x MB Club Veteran

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    Will order one tonight, not cheap but worth it for convenience.

    What’s the advantage of buying a larger capacity filter? Is it just that is houses more resin?

    There’s a 25litre model for £299, I guess I could permanently mount this inside a recessed cupboard I have in my house. Larger capacity meaning I won’t have to change the resin for ages? Is that a reasonable price?
     
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  13. JDL60

    JDL60 Hardcore MB Enthusiast

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    I’ve got the 7l one which I use infrequently - it does reduce the spotting but not eliminate ( not on a black car anyway) so don’t expect miracles
     
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  14. Pondman

    Pondman Hardcore MB Enthusiast

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    I too have the 7L version - no water spots here!
    Not wanting to insult, but I once fitted the hose inlet and outlet on the wrong way round and it did indeed leave water spots. I highlighted them with tipex after that as it is very easy not to see which way round they should go on. I use mine every time I wash my dark grey (Tenorite) E63s and my dark grey transit off and it leaves them spotless. I always make sure that l use a pressure washer to rinse with, as it pushes out all of the sudds from the crevasses and prevents dribbles of dirty water occurring later when driving. :)
     
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  15. Pondman

    Pondman Hardcore MB Enthusiast

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    The 7L version is much more portable as it is lighter and cheaper to refill when required. I only use mine on the final rinse so as to I change the hoses over from cylinder to hose to pressure washer when required. This ensures maximum life of the cleaning resin. A local system is easier to swap over than walking backwards and forwards to the garage. The 7L version is probably more stable as well as it has a lower C of G. :)
     
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  16. glenavy-drongo

    glenavy-drongo Hardcore MB Enthusiast

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    A much cheaper and more sustainable option would be to use an RO unit, into a water butt and a submersible pump to feed the hose/power washer. Maybe a bit more of a faff, but the filters will last for several thousand litres and are around £10 to replace a set. I have used a large RO unit for my marine tank for years and can confirm their performance.

    D
     
  17. Pondman

    Pondman Hardcore MB Enthusiast

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    What are the flow rates through an RO unit?
    Some pressure washers require a good flow of water to work without hunting. My commercial Kranzel 125bar machine requires a minimum of 12L/min. Most domestic machines are 6-10L/min.
     
  18. Will

    Will MB Club Veteran

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    I think that’s why he said to fill a water butt first?

    Water butts can hold a couple of hundred litres plus - although if you’re pumping 12L a min out of it you’re going to be emptying it pretty quickly (probably still enough to wash a car though to be fair) :)
     
  19. Pondman

    Pondman Hardcore MB Enthusiast

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    Ahh yes Will, BUT! The RO unit works through osmosis of only the water molecule through a semi-permeable membrane, thus stopping all other debris and minerals from passing through; thus creating a huge slowdown/restriction in production of flow/pure water. The flow will not increase by adding extra pressure it will only work at a certain rate. It is this afore mentioned flow rate that I’m questioning. The flow of the pump providing the pressure and flow is irrelevant to the final amount of water produced. The reason for using water butt water is that as long as it is clean, it is a lot softer and has less minerals to be filtered out. I know this as my work is aquatics.
     
  20. Will

    Will MB Club Veteran

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    He’s filling a water butt from an RO unit. The water butt provides a buffer of a couple of hundred litres plus of water, this is pumped out to feed a pressure washer.

    The flow rate of the RO unit is not relevant.

    I have quite a good understanding of Reverse Osmosis btw :cool:
     

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