I bought a snapper with a B & S engine on it from a Company called Northern. I put the correct amount of oil in and used it for two days. On the third day the engine burnt up. There was no oil in it. No leak under or on the deck. I took it back to Northern, and they would not accept it back. They said I would have to deal with the B&S man. Have any of you ever had something like this happen? Any suggestions?