Husqvarna Oil Guard ™ is a semi-synthetic 2-stroke oil blend specifically designed for power cutters. The unique color regulates Husqvarna’s patented Oil Guard™ system, eliminating piston and cylinder failures caused by lack of lubrication. The oil is also ideal for other 2-stroke power equipment used in tough, dirty conditions. Husqvarna Oil Guard™ 2-Stroke oil formulation also contains fuel stabilizer to help reduce the risk of engine failures caused by spoiled gas.