RED-E Hi-Performance 4-Cycle oil is an ashless blend of supior quality, preimum synthetic base oils that are specially formulated for today's high tech small engines. RED-E will provide excellent thermal stability, anti-wear protection and oxidation prevention. RED-E has a superior friction modifier that will allow engines to accelerate quicker and turn more RPM's on the top end. RED-E will eliminate major carbon deposites and allow for superior ring and valve seating. It is not necessary to flush your engine when changing to RED-E.