I like the way that 2Biz thinks about chemical costs. I haven't looked at it that way, but will in the future.
I use Super Wash pre-soak that is sold by
kleen-rite in powder form.
https://.www.kleen-ritecorp.com/p-6690-kleen-rite-super-wash-50-pound.aspx. 50 lbs costs $73 and makes 55 gallons. Randy suggested this to me and it has worked out very well. It is kind of a pain to mix it up, but I've found that it stays in solution well if you mix it up 55 gallons at a time. Takes about 2 hours to mix it and transfer it to smaller containers. Randy mixes his in smaller batches. I also use 2 ounces of simonize foam additive per gallon. I wait to mix the foam additive in until I put the presoak online for use.
I use one large gravity feed tank for all of my self serve functions with the exception of spot free rinse. The tank feeds
flojet pumps that push the water through Dema MixRite chemical proportioners. For presoak I run the floject at 65 PSI and air at 25%. Very similar pressure to 2 biz.
I went to a straight hose on a boom for a while in one bay, but I couldn't get my foaming wax (previously 3x foam) to come out consistently. The curly hoses drive me nuts....always straightening them out after customers tangle them up. BTW - I went to a foaming carnuba wax rather than 3x foam at the suggestion of some forum members. Easily my most expensive chemical, but customers like.....just cringe when I see customers jump to the wax as the first step.
I put together a variation of the winterization system that 2biz built for his wash. Mine is manual, open a ball valve to push air to a bay, then another valve to push some -20 windshield washer fluid, then air. Takes about five minutes and about 1/2 gallon of fluid to blow down my bays. It doesn't get really cold for long periods of time in North Carolina. If it is going to get well below freezing for more than six or eight hours I winterize my low pressure functions and shut down my bays until it gets above freezing. I don't have heated floors, so the mess it makes for the little business I get isn't worth staying open. Last winter was the first that I didn't use no freeze
soap or triple foam....thanks 2Biz!