Arnold 50:1 Premixed Fuel & Oil. 32 oz. The first premixed fuel engineered specifically for portable gas-powered equipment. Convenient, saves time and delivers great performance. Pre-mixed high octane fuel and synthetic oil mixed to the precise 50:1 ratio that your equipment needs. Contains no ethanol. For two cycle engines like leaf blowers, chainsaws and lawn/weed trimmers. Easier start-up, increased trigger response and smoother idling with no smoke or plug fouling. Prevents rubber and plastic part breakdown and extends equipment life and ensures proper break-in for new equipment.