What type of oil should I use in my Briggs & Stratton engine?

It is recommended to use high-quality SAE 30 motor oil specifically designed for small engines in Briggs & Stratton engines. This oil should have a classification of "SG," "SH," "SJ," "SL," or higher. Always check the oil level with the dipstick and fill to the appropriate level. For colder temperatures, an alternate option is using SAE 5W-30 synthetic oil, providing improved starting in lower temperatures. Avoid using multi-viscosity oils like 10W-30 or 10W-40 unless specified by the engine manufacturer. These may harm the engine's performance. Regular oil changes, following the recommended maintenance schedule, is vital to ensure engine longevity and optimal performance. Always refer to the engine operator's manual for specific oil recommendations and guidelines.