Guest phyte0450 Posted April 23, 2015 Share Posted April 23, 2015 Hi, I have water spots on my car on top of Opti-coat. I applied the Optimum MDR some were removed but there are still water spots left. Any suggestions? Will leaving it on longer have a better effect or do I need to apply pressure when applying? Thanks! Link to comment Share on other sites More sharing options...
Ron@Optimum Posted April 23, 2015 Share Posted April 23, 2015 The MDR should remove the mineral deposits on the surface, but sometimes there is a discoloration left behind, If you can feel the water spot, you need to go back over with MDR, letting it dwell then rubbing vigorously. If it's coloring only, time in the sun should cause it disappear (UV is an amazing force). Link to comment Share on other sites More sharing options...
Guest phyte0450 Posted April 23, 2015 Share Posted April 23, 2015 Thanks for the quick reply Ron! Any other watchouts like: is it okay to leave MDR under direct sunlight? Link to comment Share on other sites More sharing options...
wjax Posted August 3, 2018 Share Posted August 3, 2018 On 4/23/2015 at 11:28 AM, Ron@Optimum said: The MDR should remove the mineral deposits on the surface, but sometimes there is a discoloration left behind, If you can feel the water spot, you need to go back over with MDR, letting it dwell then rubbing vigorously. If it's coloring only, time in the sun should cause it disappear (UV is an amazing force). I have the same problem, opti-coat pro now with light water spots after getting sprayed with sprinkler water last weekend. It is discoloring only - the surface is very smooth. I washed the car with ONR Sunday which didn't help much and I tried vinegar today (5 days later) which seemed to have little or no effect. Is there much of a chance the spots will fade with time and sun if it has already been nearly a week? If so, how long should I give it? Link to comment Share on other sites More sharing options...
Ron@Optimum Posted August 4, 2018 Share Posted August 4, 2018 It's unlikely the spots will disappear after this many days. The ultimate water spot remover (that does not effect Opti-Coat Pro) is wheel cleaner - Meguiars Hot Rims Chrome Wheel Cleaner has been effective. Link to comment Share on other sites More sharing options...
wjax Posted August 4, 2018 Share Posted August 4, 2018 9 hours ago, Ron@Optimum said: It's unlikely the spots will disappear after this many days. The ultimate water spot remover (that does not effect Opti-Coat Pro) is wheel cleaner - Meguiars Hot Rims Chrome Wheel Cleaner has been effective. Okay thanks. Any particular way I should apply the Meguiars to the paint? It is Tesla's multicoat red if that makes any difference. Link to comment Share on other sites More sharing options...
Ron@Optimum Posted August 6, 2018 Share Posted August 6, 2018 spray on, let dwell for a minute or 2, wash off with lot's of water. Link to comment Share on other sites More sharing options...
wjax Posted August 8, 2018 Share Posted August 8, 2018 On 8/6/2018 at 8:17 AM, Ron@Optimum said: spray on, let dwell for a minute or 2, wash off with lot's of water. I did as you recommended and - viola - the water spots disappeared. Thanks! Link to comment Share on other sites More sharing options...
Ron@Optimum Posted August 9, 2018 Share Posted August 9, 2018 Great - credit goes to Dann Williams who did the original experimentation to find a water spot solution. Link to comment Share on other sites More sharing options...
Skirk1983 Posted August 13, 2018 Share Posted August 13, 2018 Hi Ron same problem here. Grey water spots on my Opti coat Pro+. Water that dryed in the sun. so I should use Meguiars Hot Rims Chrome Wheel Cleaner and not Optimum MDR? Here in Denmark, I can only find Meguiars Hot Rims All Wheel Cleaner. Will that work or must it be Meguiars Hot Rims Chrome Wheel Cleaner? thanks Kristian Link to comment Share on other sites More sharing options...
Ron@Optimum Posted August 13, 2018 Share Posted August 13, 2018 Kristian, I've answered by email, but MDR is the less aggressive water spot remover (Optimum always goes from least aggressive to most in suggestions). If the Maguiars Wheel Cleaner is acid, it should work. Link to comment Share on other sites More sharing options...
Lowejackson Posted August 13, 2018 Share Posted August 13, 2018 Kristian, one place you could buy some MDR is http://www.optimumcarcare.nl/wassen-drogen?product_id=103 The postage is not cheap so might be worth shopping around or getting a quote first Link to comment Share on other sites More sharing options...
Skirk1983 Posted August 13, 2018 Share Posted August 13, 2018 Thanks guys. Both Optimum MDR and Maguiars ChromeWheel Cleaner, is not easy to find here in Denmark. And Maguiars All Wheel Cleaner is not acid. Maybe Mothers Chrome Wheel Cleaner will work, as long it’s acid. Kristian Link to comment Share on other sites More sharing options...
Ron@Optimum Posted August 14, 2018 Share Posted August 14, 2018 we've only tested Maguiars, but Mother's should work as well. Link to comment Share on other sites More sharing options...
Sjbiss Posted February 26, 2019 Share Posted February 26, 2019 Will the Meguires also work with Gloss Coat without harming the coating? Link to comment Share on other sites More sharing options...
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