From the experience of a co-worker of mine you may want to use caution
before using your new airbrushes with ANY automotive paint.  Most quality
auto paint is "hot" enough to ruin the seals and rings in most airbrushes,
thus rendering them useless.  My co-worker has many top of the line Iwata
brushes and none of them take well to auto paint.  If my memory is correct
he has only one brush that can deal with the solvents in auto paint.

The message......check with you airbrush manufacturer before you use it, at
least if you want to be able to use it more than once.

Mark
82 Westy, chipped paint and all!