BKF

This car wash has 2 columns with a foam mode, which produces something white, similar to a soap composition, but clearly not foam, and even then not immediately after you turned on this mode. "Foam" immediately began to drain from the car and leave traces. After the end of the wash (foam, main, rinsing), a layer of dust remained on the car when it dries. What was not on this sink before, when there was normal foam.

the pressure is weak, the flow rate is large, nothing was washed off except for surface dirt.