See our Pre Wash Guide for more in Depth knowledge.
No Pre-Wash
At best, this should be avoided. It may be acceptable for light dirt, but you must adjust your technique to handle the added risk. Be extra cautious in other steps to make up for it.
A Rinse
If nothing else is available—or if you have deionized (DI) water and just want to quickly blast off fresh dirt with no follow-up wash—this is better than doing nothing.
pH Neutral Pre-Wash
Best for mild dirt levels, where the dirt hasn’t had time to settle. Ideal for garage queens. Also suitable if you’re using a less chemically resistant Carnauba wax. Take extra care here. Product quality and effectiveness can vary greatly.
Alkaline Pre-Wash
Your best all-around choice unless the vehicle has natural wax protection. Always check for material compatibility and safety. Stronger isn’t always better.
Acidic Pre-Wash
Only use this on coated cars, and only to unclog the coating. Always use it after an alkaline pre-wash step.