Anti-wear additives create a protective layer on critical metal surfaces, reducing friction and wear during the high-stress phases of the four-stroke cycle. Briggs & Stratton provides clear guidance on this in your operator’s manual, but a general rule applies to most walk-behind mowers and standard engines.
Step-by-Step Briggs Stratton Oil Filter Installation Guide
Conversely, the number after the "W" indicates the oil's thickness at 210°F (100°C). Foam inhibitors are also crucial, as the churning action of the crankshaft can whip air into the oil, reducing its lubricating effectiveness.
They flow better in the cold and provide enhanced protection during extreme heat, making them ideal for engines subjected to heavy use, such as those in commercial landscaping or consistently dusty environments. Understanding the "W" Rating The number preceding the "W" stands for "Winter.
Step-by-Step Briggs Stratton Oil Filter Installation Guide
Briggs & Stratton recommends oils that meet specific detergent standards to prevent the accumulation of harmful varnish and sludge. Look for a 10W-30 viscosity rating for typical use in temperatures ranging from freezing to 80°F (27°C).
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