It depends on the surface to be primed. If it is a good surface such as one that has already been painted and is in good shape, there may be no need to prime. Bare metal would require at least 2 in most cases and sometimes more
No specific number as what you are going for is the color to be even all around. Once it is even than a clear coat is applied. If you are asking how much paint it will take to paint a car depends on...
It's going to depend on what your starting surface is. Usually a single coat of primer should be fine unless you have a very very strong color being covered by a very light color. Another exception...
Thorough cleaning, followed by primer and two coats of paint will provide the longest lasting exterior finish.
This depends on a few things. If the paint is currently in good condition you...
Yes you can. As a mater of fact I once had a car that had nothing but primer on it for years. The only problem with it is that it is a little unattractive and can be a bit of a a cop magnet.
The number of coats per gallon depend on the size of the area you are going to paint. Most paint cans have the area of coverage per gallon printed somewhere on the label. Divide the area of coverage...