Sorry to post so many of the same thing....stupid phone. Anyway I was out riding and the top piston ring broke and gouged the cylinder really bad. I bought a N.O.S cylinder off ebay for $105 and an OEM piston kit for $32. I'm waiting on the piston to come (from Thailand) but it should be up and running again in a few weeks hopefully. I did find air-cooled 2-cycle oil at walmart and fleet farm in an 8oz bottle. I wish they had it in quarts though as the oil tank holds 1.4 quarts