I recently bought a used Porsche 996 and after washing it myself the first time I noticed the faint marks of water spots mostly on the roof and the hood.

They are very faint and only noticeable up close and at the right angle but now that I know they're there I really would like to get rid of them. Washing and waxing didn't do anything to them so what is the easiest/safest way to get rid of them?

I took a picture that will hopefully show the problem.

 

Wow, you have some major oxidation there. I have a black Audi that is a nighmare to keep shiney. What I had to do is rub the car out, I used maguires 3 step setup and the car is as shiney as a mirror, basically you rub it out with there compound and then wax it. Works amazing and took about 6 hours.

 

What you have is merely mineral deposits from water drying; your paint isn't oxidized. If you had oxidized paint, it would be dull and feel very dry. You can polish it by hand, but a porter cable and menzerna polish is the right ticket. I'd use the da, menzerna super intensive polish, menzerna micro polish, and some lake country pads. You can polish with the SIP and lake country orange pad first. This will do majority of the work effectively and safely. Then follow it up with the Micro polish and lake country white pad. You're now ready to hand polish and wax. Hope this helps.

 

Or that.

 

The price of owning a black colored car. Either you have to love it or hate it.

 

I guess Seal Gray is close enough to black.

I did try to use Mothers Clay and that seemed to remove almost all the spots. I just put the car away for the winter (sucks to live in Chicago) so I'll resume dealing with the spots in the spring.