The Oilamatic Preoiler will help reduce engine wear, and ultimately extend the life of your aircraft's engine. The Preoiler will pressurize hydraulic lifters. The benefits of properly pressurized lifters include improved valve timing, smoother starts and less camshaft wear. The engine does not need modification to accomodate the Preoiler. The Oilamatic Engine Preoiler may be installed at any time. The engine does not need to be removed for installation. Up to 70% of engine wear is caused by insufficient lubrication during start. Install a Preoiler and lubricate bearings, pressurize lifters, lubricate cams and lubricate valves.