How do I clean air tanks?

Bruce,

Tough one to remedy. I had the same problem and when it got to that point it was bad. My tank was rusted through to the point of no go junk. It had rusted out so much and so thin that I was afraid of using it. Rust is a problem because the tanks are not treated. You can drain it more often or put on a auto-draining device from Harbor Freight. Also, I would add a water filter to catch the last bit of moisture before it hits your tools.

Thanks