STA-BIL Starting Fluid is a special formula starting fluid with upper cylinder lube and a corrosion inhibitor. STA-BIL Starting Fluid is safe for oxygen sensors and catalytic converters. It is for use in all gasoline and diesel engines in cars, trucks, tractors, buses, marine engines, lawnmowers, snowmobiles, snow blowers, and construction equipment. This starting fluid saves starters and batteries by helping get engines started quickly.