Best Soaps for Pressure Washers: Tips for Cars and More
Your ultimate guide to selecting the right soap for every pressure-washing task.
Understanding Pressure Washer Soaps
Pressure washers are versatile cleaning tools, but their performance depends significantly on the type of soap or detergent you use. Choosing the right soap ensures effective cleaning, protects the surfaces, and prevents damage to your pressure washer.
How to Use the Soap Dispenser on a Pressure Washer
Most pressure washers come equipped with a built-in soap dispenser or a foam cannon accessory. Follow these steps for the best results:
- If you pressure washer has adjustable pressure settings, start at a low setting, as high pressure can prevent the soap from mixing properly.
- Fill the foam cannon with the appropriate detergent designed for your task.
- Use a nozzle specifically designed for soap application, usually black or low-pressure nozzles. Foam cannons often require nozzles with wide orifices (1.25mm+) to ensure adequate flow.
- Rinse the surface with plain water after applying the soap.
Can You Use Dish Soap in a Pressure Washer?
Dish soap might seem like a convenient choice, but it is generally not recommended for pressure washers. Here's why:
- Dish soap can create excessive suds, which may clog the pressure washer or reduce efficiency.
- It may not be biodegradable, posing risks to the environment.
- Specialized pressure washer soaps are designed to protect the washer and ensure safe cleaning.
If you're in a pinch, you can dilute dish soap heavily (1 part dish soap to 10 parts water), but use it sparingly and clean your machine thoroughly afterward.
What Soap to Use in a Pressure Washer for Cars?
For car washing, it's best to use soaps specifically designed for automotive use. These soaps:
- Are pH-balanced to prevent damage to your car's paintwork.
- Contain additives to loosen dirt and grime without abrasive effects.
- Rinse off easily, leaving no streaks or residue.
Popular brands include Adam's Polishes, Sonax, and McKillans. Always check the label to ensure compatibility with pressure washer foam cannons.