Soap Mixture

Can anyone explain what type of mixture should a car wash use. For example: Coin self serve car wash and what would be the mixture soap/water.

Any suggestions on good places to check out prices?

Thanks

Not enough information to make a helpful post, Dave,

It depends on the chemical how it is mixed. Can you provide more specifics?

Whoever sells you the soap should tell you how to mix it. There are many soaps on the market and they are all different. You don't sound like a car wash operator (?) It also depends on how it is applied, at what pressure, quality of water, etc. Start out with a brand from a car wash chemical supplier - use his recommendation on dilution - as a starting point.