Pro-Techt
Member
I'm wondering if it is humanly possible for a dirty car (one with road oils, not just dust) to get 100% clean in a Self-Serve wash if you DON'T use the foam brush step? Some people claim that allowing the pre-soak to have time to dwell will allow it to loosen the dirt and cause the dirt to swell, making it softer. The softer, looser dirt is now more vulnerable to attack with the HP Soap. The HP soap alone won't remove all road film, since its not as strong a detergent as the pre-soak is. Applying lots of pre-soak and letting it dwell is really the secret of touchless cleaning at a good Self Serve.
In all my years of washing @ the DIY washes I never been able to get a dirty car totally clean unless you hand wash it or use the brush. Every time I've tried there's always been a fair amount of dirt transfer on my drying towel. I'd rather spend a few more minutes going over the vehicle with some sort of friction when it's wet with soap instead of drying/wiping in dirt at the end.
In all my years of washing @ the DIY washes I never been able to get a dirty car totally clean unless you hand wash it or use the brush. Every time I've tried there's always been a fair amount of dirt transfer on my drying towel. I'd rather spend a few more minutes going over the vehicle with some sort of friction when it's wet with soap instead of drying/wiping in dirt at the end.