Which is the Best Oil for Briggs & Stratton Pressure Washer?

Briggs & Stratton is a name synonymous with high-quality engines, and if you own one of their pressure washers, you’ll want to ensure it operates efficiently for years to come.

One of the critical aspects of this maintenance is using the right engine oil.

Here’s a comprehensive guide to help you determine the best oil for your Briggs & Stratton pressure washer.

The quick answer: Which is the Best Oil for Briggs & Stratton Pressure Washer?

Briggs & Stratton recommends their own oil brand for their pressure washers (Briggs & Stratton SAE 30W Oil)

1. Understanding the Engine Specifications:

Before diving into the type of oil, it’s essential to know the specifics of your Briggs & Stratton pressure washer engine. Does it have an overhead valve (OHV) design or another type?

The engine’s design can influence the best oil type. Always refer to your user manual for any specific recommendations.

2. Recommended Oil:

As just mentioned, Briggs & Stratton typically recommends using their own SAE 30 4-cycle oil for most of their pressure washers, especially in temperatures between 40°F and 100°F. This oil provides the ideal balance of lubrication in the most common temperature ranges.

3. Synthetic Oil:

Synthetic oils, like the 5W-30 or 10W-30, can be used in all temperatures. They’re particularly useful for ensuring smoother startups in colder climates below 40°F. Synthetic oils are also known to prolong engine life because of their superior lubrication properties and resistance to breakdown.

4. Oil Brands:

While Briggs & Stratton offers its brand of oils optimized for their engines, other reputed brands can be used, provided they meet the necessary quality and viscosity requirements. Names like Mobil, Castrol, or Pennzoil, when meeting the appropriate specifications, can be equally effective.

5. Avoiding the Wrong Oils:

  • Motor Oils: Automotive oils might contain additives not optimized for smaller engines like those in pressure washers. Such oils might cause sludge and unwanted deposits.
  • Compressor Oils: Designed for air compressors, these oils lack the necessary additives to protect against the by-products found in gasoline engines.
  • 2-Stroke Oils: Briggs & Stratton pressure washers use 4-stroke engines. 2-stroke oils, meant for engines where fuel and oil mix, are unsuitable and can lead to poor lubrication and overheating.

6. Regular Maintenance:

Using the right oil is just one aspect of ensuring the longevity of your pressure washer. Regularly check the oil level, change the oil as recommended (typically after the first 5 hours of use, then every 50 hours or annually), and keep the engine clean from debris. Clean oil is essential for optimal performance.

7. Disposal of Used Oil:

Remember to dispose of used oil responsibly. Most localities have designated recycling or disposal locations for used engine oil. Never pour it down drains or into the environment.


Your Briggs & Stratton pressure washer is a blend of precision engineering and quality craftsmanship. To ensure it serves you efficiently, always choose the right oil based on the engine’s specifications and operating conditions. Regular maintenance, combined with the right lubricant, will guarantee optimal performance and extend the lifespan of your equipment.

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