That's the ticket!! Zaino is the best at keeping water spots off the finish. The last thing I use after a good wash is Z6 detailing spray. This stuff is a force shield against hard water.Black06 said:A good polish or cleaner wax will remove the water spots. Tough ones may take a little elbow grease. I use Zaino polishes and always throw another coat of Z-2 before car shows and it takes the spots right out.
Incidentally, the coke is to remove the lime deposits from hard water, I think is the acid.