“….clientele in my area are HOOKED on Pre-Soak, & I feel like they would go elsewhere if I dumped the Pre-Soak & Tire cleaner.”
Pre-soak is
soap and
soap is pre-soak.
Heroin addicts want heroin not pot.
So, if you sell customer’s a high quality
soap, why would they quit coming because you no longer sold pre-soak.
Again, one way to make money with a self-serve wash in an economically depressed area is to not let customer’s waste time in order to get them to spend more money.
So, I suggested a product selection (clockwise) that is a process to clean and shine and protect a vehicle. This solves the customer’s problem. The only reason they visit you.
“…. there's not much left over to add a new feature that would costs thousands...”
I’ve helped a lot of people make a lot of money in the carwash business.
My experience shows you can make more money by providing a feature that generates income than you can by saving nickels on
soap.