Auto drains are so cheap and easy to setup, should be standard equipment for any car wash nowadays. Even the name brand ones aren't that pricey for the automation and cheap insurance they provide.I think this is the perfect time to repost this video
Just a heads up harbor freight has this air compressor on sale starting aug 11 for $199. In store only.https://www.harborfreight.com/20-gallon-135-psi-oil-lube-vertical-shopauto-air-compressor-64857.html
This was the one I put in, about a year ago at this point. I change the oil every 3 months. So far, no issues.
Edit. It starts aug 11 for members. Aug 15th for the common joe.Just a heads up harbor freight has this air compressor on sale starting aug 11 for $199. In store only.