What Type Of Oil Briggs And Stratton Lawn Mower?

by Anna

Maintaining your Briggs and Stratton lawn mower is crucial to ensure optimal performance and longevity. One of the key aspects of proper maintenance is using the right type of oil. The choice of oil can significantly impact the engine’s efficiency, lifespan, and overall functionality. In this comprehensive guide, we will delve into the factors to consider when selecting oil for your Briggs and Stratton lawn mower and provide recommendations for optimal performance.


Understanding Engine Oil Basics:

Before delving into the specifics of oil for Briggs and Stratton engines, it’s essential to understand the basics of engine oil. Engine oil serves several critical functions, including lubricating moving parts, reducing friction, cooling the engine, and cleaning internal components. The viscosity, or thickness, of the oil is a crucial factor in its performance, especially in various temperature conditions.


Briggs and Stratton recommends using high-quality detergent oils that meet their specific requirements. These oils are designed to keep the engine clean, prevent deposit buildup, and provide optimal lubrication.

Viscosity Ratings:

When choosing oil for your Briggs and Stratton lawn mower, pay attention to viscosity ratings. Viscosity refers to the oil’s thickness, and it is typically denoted by two numbers. For example, 10W-30 signifies that the oil has a viscosity of 10 in cold temperatures (the ‘W’ stands for winter) and 30 in warm temperatures.

Briggs and Stratton generally recommends using SAE 30 for warmer temperatures (above 40°F/4°C) and 10W-30 for colder temperatures (below 40°F/4°C). These recommendations ensure that the oil maintains proper viscosity across a range of operating temperatures.

Synthetic vs. Conventional Oil:

Another factor to consider is whether to use synthetic or conventional oil. Synthetic oils are chemically engineered for superior performance and offer better protection in extreme conditions. They provide improved lubrication, resist breakdown at high temperatures, and flow better in cold weather. However, synthetic oils are typically more expensive than conventional oils.

Conventional oils, on the other hand, are derived from crude oil and are more budget-friendly. While they may not provide the same level of performance as synthetic oils, they still offer adequate protection when used according to the manufacturer’s recommendations.

Briggs and Stratton explicitly states that synthetic oils that meet their specifications are acceptable for use in their engines. If you choose to use synthetic oil, ensure it meets the API (American Petroleum Institute) and ILSAC (International Lubricant Standardization and Approval Committee) standards specified in your engine’s manual.

Oil Change Intervals:

Regular oil changes are essential for maintaining a healthy engine. Briggs and Stratton recommends changing the oil after the first five hours of use and then every 50 hours or at the beginning of each mowing season. If you use your lawn mower more frequently or in harsh conditions, more frequent oil changes may be necessary.

It’s crucial to follow the manufacturer’s recommendations for oil change intervals to prevent engine wear and ensure consistent performance. Neglecting oil changes can lead to increased friction, overheating, and ultimately, engine damage.

Additional Tips for Choosing the Right Oil:

Check the Manual: Always refer to your Briggs and Stratton lawn mower’s manual for specific oil recommendations. The manual provides valuable information on oil specifications, viscosity, and change intervals.

Consider Temperature Conditions: If you live in an area with extreme temperature variations, consider using multi-viscosity oils like 10W-30, which perform well in both cold and hot conditions.

Avoid Additives: Briggs and Stratton advises against using oil additives, as they can alter the oil’s chemical composition and potentially harm the engine.

Storage Considerations: If you store your lawn mower for an extended period, Briggs and Stratton recommends draining the fuel tank and running the engine until it stops to prevent stale fuel issues.


Choosing the right oil for your Briggs and Stratton lawn mower is a crucial aspect of proper maintenance. By following the manufacturer’s recommendations, considering temperature conditions, and understanding the basics of engine oil, you can ensure that your lawn mower operates at its best for years to come. Regular oil changes, using high-quality oils, and adhering to maintenance guidelines will contribute to the longevity and reliability of your Briggs and Stratton engine, allowing you to enjoy a well-maintained lawn throughout the mowing season.


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