Lucas High Performance Semi-Synthetic 2-Cycle Oil has been specifically developed to give a long trouble-free life to gasoline-powered 2-cycle engines. Designed for any oil injection system or pre mix up to 50: 1. Use in Snowmobiles, Weed Eaters, Leaf Blowers, Chain Saws and more. Lucas High Performance Semi-Synthetic 2-Cycle Oil uses an advanced "Smokeless" formula specially blended from mineral oil, synthetic oil and a low ash additive package containing fortified dispersant inhibitors. It also contains exclusive detergents and lubricants. The end result of this advanced technology is a more thorough burning of the fuel resulting in more power and fewer emissions. Lucas ashless detergent inhibitor package minimizes spark plug fouling, pre-ignition, ring sticking and combustion chamber deposits. The user can expect cleaner exhaust ports and spark plugs, less carbon buildup on the piston rings, skirts, crown and under crown areas. For more specific information on each oil please review our product specification sheets.