Dilution ratio

A dilution ratio tells you how much concentrated product to mix with water before you use it. It is written as two numbers, like 1:10 or 1:20, meaning one part product to ten or twenty parts water. Snow foam, all-purpose cleaners, wheel cleaners and rinseless wash concentrates are almost all sold this way so one bottle can be stretched into many uses instead of being used at full strength every time.

Getting the ratio right matters because concentrated chemicals are formulated to work at a specific strength. Too weak and the product will not cut through dirt, grease or brake dust, so you end up scrubbing harder and risking scratches. Too strong and you waste product, and on some surfaces you raise the risk of streaking, staining trim, or stripping wax and sealant faster than expected.

When buying a concentrate, check the label for a range of ratios for different jobs, such as a light maintenance mix and a stronger mix for heavy contamination. A cheap measuring jug or a labeled spray bottle with volume markings makes mixing accurate instead of guessing by eye. The most common mistake is eyeballing pours, which leads to inconsistent results between washes and makes it hard to know if a problem was the product or the dilution.