Had a guy come into the shop with a BP blower the other day. The blower was a month old and he was pissed, he was using it and it locked up.I tore it down and after I got the covers off to remover the cylinder You could see the discoloring of the cylinder.You know, the telltale sign of over heating. I call him up and ask him what brand off oil he`s been using and he said its 2 stroke oil. I say what kind ? He says outboard engine 2 stroke . Warranty.... DENIED Motor oil is not designed to deal with the heat of newer 2 stroke engines. But hey, as long as you want to use motor oil, I will keep selling you brand new machines You guys are great for buisness.