[fintstone]

I used to paint cars (as a hobby or to flip) back when lacquer was the bomb. Could spray a car in the driveway and sand/polish out any imperfections. The stuff dyed almost on contact. Just don't do it any more as pros here are cheap and do a great job...and no mess on my end...and no breathing paint and bond dust. In fact, I had just bought a huge compressor and a couple of guns when I stopped...so just cluttering the garage now.

It is a safety issue. If you don't drain the water, it will eventually rust out the tank. Personally, for a small tank that you don't use every day....it is relatively quick and easy to drain often.

If you paint, you need to get any water and oil out of the airy are spraying. Also, if you have an inline oiler for air tools, don't use the hose after that for paint. Get a different one for paint.