When i was twenty i moved to fayetteville NC. My wife and i bought a house with .6 acres of land and a small house on it. At this time i went to store and bought a 22 inch push mower with a small briggs on it. Once a week about i would mow the grass and always used this push mower. There were times that the grass in the back of house was fairly heavy and the mower struggled thru it. Regular stalls were common in places. The mower was probably over worked. Anyway, i changed the oil once a year, with whatever 5w or 10w 30 i could get cheapest. Probably mostly super tech. After about 4 years it started burning some oil, and within two more years, i was lightly fogging the neighborhood. So you could say 6 years of solid use is about what i got from it. Is this pretty common for this type of engine, or could i have done it a major favor by using 15w40 or something heavier. Remember it was usually in the 80s minimum when mowing down there. Mostly probably in the 90s. Just a fun post to see what you all think.