Today's Aerosol's are crap

Maybe these cans just use fresh air there in China!!! Wait there is NO fresh air in China!!!
It know getting the auto spray gun (HF gun maybe?) out requires that clean up later which I dislike, but really, buy a qt, can of Rustoleum for $9 and thin it a little. Just use their aerosol for small thing like nuts and bolts, or maybe the rad. support.