As always, Dan is 100 percent correct. I play with restoring vehicles and am absolutely sure that if the clearcoat is coming white, particularly if it is powdery, then it is shot. Along with white appearance and powdery feel, if you look closely, you will likely see an almost wrinkled appearance, which is the 'paint shrinking'. All these things are the effects of exposure to elements and time. At this point the only option open is paintwork.
Now, if it is only the swirl marks that you first mentioned, then there are ways to fix that...
1. Get a bottle of 3M "Swirl Mark Remover" and get the one for either "dark" or "light" colored vehicles, as appropriate.
2. Using an RO buffer, buff the swirl mark remover into the finish, following the instructions. One thing that the instructions do not neccessarily explain but "time with the tools" teaches is that when you use the swirl mark removers, or fine cut cleaners, you work the product into a square section and work it literally from liquid to paste to powder to buffed off before going to the next slighty overlapping square section. IOW, so many people put hte product on wet and stop working it while it is still wet. This does not make the most of the product as it is designed to dissolve into smaller and smaller polishing particles. After many many many safe hours practicing with an RO buffer, eventually you can do this process with a high speed rotary buffer. Be warned that high speed rotary buffers in inexperienced hands will burn through paint, and will grab things like trim and antennas and accessories and rip them right off of the vehicle, ask me how I know. :-[
3. After the swirl mark remover process, wax and buff and many if not most swirl marks are gone.
Speeking of paint work and body work and such, I'd like to know, is there any way to go to the dealer, show them the VIN stickers on all the doors, hood, tail etc, and get them to reprint one that is fading? I have a sticker that for some reason does not seem to be the typical tape type sticker but a paper one. It is sorta wrinkled and fading but hte VIN is perfectly legible. I would think that if you could verify it was your vehicle and that there was no damage, yadda yadda yadda, you could get some certified sticker??? Am I smokin my socks again or is there a way to do this??? Thanks.