Posted by KevinSS on LS!.com on 1/27/02 No wax or polish will prevent water deposits, that is just not going to happen. What you are seeing is the minerals and contamination left from the water that evaporated on the surface. Z-2 or Z-5 is not going to remove water spots as they contain no abrasives which you have already demonstrated. Getting to the spots soon is the key, the Z-6 contains a fresh water spot remover, it will take off spots that gather the same day or week, other than that, Most 'fresh' mineral deposits (water spotting, acid rain, etc.) can be removed using household white vinegar full strength. This is acetic acid and will loosen and remove the mineral deposits and not harm the paint surface. Most of the time, the water spot etching you see is simply the hardened mineral deposit, giving the illusion of etching into the paint. Believe me, when these mineral deposits harden. They become really tough and hard to remove. The trick is to not give them a chance to harden. If the above fails, then use a Clay Bar to remove them.... If those water spots on your car have been there for a while. They might be already etched into the clear coat. If Clay Bar will not remove them. Then what you are seeing is an etched spot in the paint surface, similar to acid rain mark etching.. Although, I am totally against using an abrasive product on todays clear coated finishes. It's possible in your specific situation, you might not have a choice. I would try 3M Foam Polishing Pad Glaze Swirl Mark Remover part #39009 by hand, not by machine, using very light pressure. This should do the trick. Be careful when doing this and only do the water spot areas, as the 3M is abrasive and will remove paint material. Don't forget to reapply your favorite wax or polish as the 3M product will remove any polish/wax. If you opt to go with the 3M Foam Polishing Pad Glaze... see following tips... 3M Foam Polishing Pad Glaze use By hand: Simply apply a small amount (about the size of a quarter) to a cotton diaper or piece of cotton towel and rub back and forth into about a 1'X 1' section using light to medium pressure until it starts to dry out. Then take a second towel and lightly rub back and forth until the polish residue disappears and the gloss comes up. If there are still some swirls visible you can repeat this step until they are minimal. I prefer using a less aggressive product a couple times instead of using a more aggressive product once. After you have done the entire car you can Dawn wash and reapply your favorite wax/polish or Zaino Z-1 and Z-5/Z-2. 3M Foam Polishing Pad Glaze use By orbital: Use a 100% cotton bonnet or a foam bonnet and apply the polish in a thin lined growing circle starting from the center and spacing the growing line about an inch from the last round all the way to the edge. Place the bonnet flat on a panel and activate the polisher and begin working the entire panel using light to medium pressure. When you have worked the panel thoroughly then take a clean towel and wipe the residue off in a back and forth motion using light pressure. Then simply move to the next section. When the entire car is done do a Dawn wash and Zaino.