Pressure Washers

Pump oil, intervals and freeze protection for gas pressure washers. Pump makers disagree on intervals and oil types, so these pages show you exactly where each figure comes from.

Every guide below cites the owner's manual or official manufacturer page it is based on. If your model's manual says something different, follow your manual.

• Pressure Washer Pump Oil: What Type and How Often, by Pump Brand

  Pressure washer pump oil isn't engine oil: Cat Pumps ISO 68 every 500 hours, Champion non-detergent SAE 30 every 250, Simpson AAA every 100 hours.