TBH, a Briggs flathead engine is as “crude” as can be compared to a Honda GXV/GCV or the Chinesium Kohler Courage/Subaru/Chondas out there but they are near indestructible outside of neglect. Rumor has it Harley’s first engine was based off a Briggs design.
A pint of oil will do you good, Briggs wanted 30W due to VII shear and deposit build-up but they say a 5W-30 synthetic is fine. I just run a 10W-30 or 15W-40 HDEO in small engines, they honestly don’t care what oil is in them - as long as it’s full and changed every 10 hours.
A pint of oil will do you good, Briggs wanted 30W due to VII shear and deposit build-up but they say a 5W-30 synthetic is fine. I just run a 10W-30 or 15W-40 HDEO in small engines, they honestly don’t care what oil is in them - as long as it’s full and changed every 10 hours.