Wow what a gem of a find. So cool to see this vintage unit still working. It looks pretty simple. Maybe thats why its still working and the fact its probably seeing great msintenance. PDQ is the best. Id love to see a Ryko system last this long, good luck at that lol. I have always been a PDQ guy.
If you ever are in the Orlando area, I live in the suburb towns of Orlando, would love to meet up sometime! I work at a really nice brand new express tunnel wash, full SONNY's equipment and controls, all brand new as we just opened. Would definitely love to show y'all around, your always welcome!
Seems like the pay station was replaced by the Coleman Hanna. This 4000 is for sure original to the bay, and many of these have been replaced in Florida. This looks like a later model (90s-00s) as the ones from 1989 looked WAY different from this one.