8. Wash exterior using two buckets.
(Image Source: detailingspot.com)
Ah, the two-bucket washing method. This tip is practically a commandment among car detailers. The first bucket has your water and soap mixed together, while the second bucket is plain water only. After you wash a section of your car with a cloth, sponge, or mitt, you rinse it off in the water-only bucket before dipping it back into the soapy one. This ensures that you won’t be putting the dirt you scrubbed away back on your vehicle later in the wash.