Welcome to the troubles of keeping a black car nice! When there clean, they look awesome,
when dirty, just look like crap!
The car wash place is going to strip everything off the car, and will put in swirl marks.
I suggest you find a local Auto Detailer, & have them hand wash the car. Or have them
do a full detail, and you just do the maintaince after. STAY away from the auto car wash!
They have very harsh chemicals that remove all the protection on your paint! They also use
silicones, that look good that day, then make the car look like crap the day after, and make the
paint feel rough!
If you take your finger & run it along the paint, it should feel smooth & glossy to the touch, if not, you have
no protection on there, & might even have containments in the paint.
Since it's black you will need a way of removing the swirl marks.
While Zino is great at shine, they have nothing to remove swirl marks.
& IMHO, the stuff is a bit of a PITA to mix & put on. If you don't remove the
swirl marks, Zino, will bring them out even more.
I would suggest if you want to DIY you get this kit.
http://properautocare.com/reshkit.html
menzerna, is the best stuff I have ever used! Easy on easy off, last a long time.
See my pic poster of pic of my 05 EVO after some Mens on it.
You can wash your car on the street, it will not be easy, but you can do it.
Get a couple of buckets, and soap one area at a time, then use the other buckets to
rinse it down.