I would have to agree with Ron...well both of them!
If you are just going to resale the car...DON'T paint it. We had a red car with white stripes for months, (cutomer changed his mind). We couldn't sell it because everyone wanted red no stripes, blue, you name it.
The week after we sold it...we had at least 3 requests for red/white.
I wouldn't want to prime a car as you will be responsible if the paint peels because the next painter didn't know what he was doing.
Just say no to paint...aluminum!
David
