Mythbusters in comparison the fuel performance of the same vehicle equally soiled and cleanse and found that when it were washed, the gas effectiveness was greater by 10%. Dirt may not appear to be it would drag an auto down, but it does. Specified that it's meant to dissolve water, https://automotivetechnician46878.blog2news.com/37366552/5-easy-facts-about-auto-body-repair-oakland-ca-described