The Champion Power Equipment 9500-Watt Dual Fuel Portable Generator with CO Shield is the perfect combination of versatility and convenience. The convenient electric start includes a battery, plus Cold Start Technology ensures a quick start in cold weather. Designed with a low oil shut-off switch, this unit includes 1.2 qt. of 10-Watt-30 oil. Operate your Dual-Fuel generator right out of the box on gas or propane and easily switch fuels with our fuel select dial. Using gas, the 500cc Champion engine will run for 8-hours at 50% load when the 7.7 Gal. fuel tank is full. It will run for 4.5-hours at 50% load when using a 20 lb. propane tank. The noise level of 74 dBA from 23 ft., is a bit louder than a vacuum. Champion Support and our nationwide network of service centers will back up your purchase with a 3-year limited warranty and FREE lifetime technical support. CO Shield technology monitors the accumulation of carbon monoxide (CO), a poisonous gas produced by engine exhaust when the generator is running. If CO Shield detects unsafe elevated levels of CO gas, it automatically shuts off the engine. CO Shield is not a substitute for an indoor carbon monoxide alarm or for safe operation. DO NOT allow engine exhaust fumes to enter a confined area through windows, doors, vents or other openings. Generators must ALWAYS be used outdoors, far away from occupied buildings with engine exhaust pointed away from people and buildings. Meets the requirements of ANSI/PGMA G300-2018.