The Champion Power Equipment 100592 6250-Watt Dual Fuel Portable Generator with CO Shield is more convenient than ever. Designed with a low oil shut-off sensor, this unit includes 1.2-quarts of 10W-30 oil. Easily switch fuels with our fuel select dial. The 389cc Champion engine produces 7850 starting watts and 6250 running watts, and will run for 11 hours at 50% load when the 7.7-gallon fuel tank is full. It produces 7050 starting watts and 5600 running watts and will run for 6.5 hours at 50% load when using a 20-pound propane tank. Also included is a 6.5-foot propane hose with a built-in regulator. With a noise level of 74 dBA from 23 feet, plus the Volt Guard protects your generator from electrical voltage spikes. Plenty of outlets are available, with a 120/240V 30A locking outlet (L14-30R) as well as four 120V 20A GFCI protected household outlets (5-20R). 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.