My P2200 B&S wanted me to run 10 hours on the 5w30 supplied oil and change it. Next recommended change is 50 hours. I ran mine under a light load (box Fan) for ~ 5 hours and then up the load to ~ 1/3 t0 1/2 the rated max load with a hair dryer and fan for another 4-5 hours. I also ran it on the eco settings so the engine would cycle when loaded and unloaded. I strronly suggest that you read the owners manual as to the rcomended oil type and viscosity. We have many self appointed experts lucking around. Ed