Rumely OilPull's were a line of tractors built by the Advance-Rumely Thresher company of LaPorte, Indiana, USA. The company introduced its first tractor in 1908 after employing engineer John Secor to work on the engine design for them. The year 1911 saw two new "heavyweight" models appear: * The twin-cylinder Model E 30-60 * the smaller single-cylinder Model F 15-30 (later re-rated as an 18-35).