They weren't kidding when they said black is not a color, its a full time job. I neglected this and now need advice on how to fix it. I let the car get California dusty and dirty for about 3 months and then drove it in the rain. This is an almost daily driver but not left in the sun for long. After the rain, I didn't get a chance to wash it for several weeks. Now the rear portions have a rough mottled frosted texture. There appears to be rain streaks going downwards as well. Probably the contaminants being partly washed off by the rain. I couldn't wash this frosting off off. Should I use clay or is there some other product that will help take off some frosting before I clay and polish?
Some more background is that I self detail the car with Griot's paint sealant. I usually wash, clay and orbital the sealant on. The sealant has a little grit in it and this usually has gotten most of the frosting off in the past, just wondered if there is anything else I can do.

 

[They weren't kidding when they said black is not a color, its a full time job]

But in your case its not even a part-time job

 

You'll need to polish this out with menzerna super intensive and either a purple pad and/or an orange pad using your orbital. It should then be followed by menzerna super finish and either a white or balck pad. Then apply your sealant

 

I was afraid I would have to take this step. I assume clay first and would Iron Cut or similar help? Is the Grio'ts orange pad the same as the orange pads you mention? I will acquire the rest.
Thanks for your help,

 

Unfortunately Porsche 911 black is one of the worst paints to care for, very much like a Jet Black BMW. For everytime you look at it the wrong way, you will gain 5 more scratches. I've had a very frustrating experience working on paints like these. They are so soft you can scratch it with even quality microfiber towels. Claying will inevitably mar your paint, so a polishing step will be required if you proceed.

 

I finally got the time to invest to do things right, three full days and a sore body. I can't imagine how detailers do this day in and day out. I followed Moe's advice and here's my sequence of steps: soap foam gun and boars hair brush, rinse, iron out spray, rinse, double bucket wash, rinse, leaf blower dry, Clay bar (this actually got most of the frosting off), Menzerna SI with orange pad on Griots 6 inch, followed by the SF with black pad. I'm happy to say that for the first time since owning the car all those hairline scratches appear to have been reduced significantly. Previously I was just filling them with sealant and wondering a few months later how I could have caused them again with my wash technique or towels. There is still a slight tinge of gray that only I can see, which I attribute to the SI scratches not being fully polished out. It'll have to wait for next time as I am too tired. I finished it all off with Zaino Z5(with ZFX) and then Zaino Clear Seal. I'll see if this fares better than my Griot's 1 step paint sealant. The three days of effort also includes all the external plastic, rubber and convertible top work.

The results are outstanding and I don't think the car has looked better under my ownership. On my first trip after the detail, I went to pick up my son from swim practice. Only two blocks down the road someone rolled down the window and commented on how shiny the car looked. Next up, interior.

 

Glad it worked out. Now let's see some of those after pictures

 

You should use a drill and a spray bottle of plain tap water and work on the lenses until clarity is restored. You can get help from auto detailing professional before it.

 

I feel your pain with the black paint but they look amazing when clean haha

 

Agreed.