The Westinghouse WGen3600DFv Dual Fuel Portable Generator is a convenient solution to your power needs, on the road or at home. Easily swap between gasoline and propane without shutting off the generator for added convenience and versatility. The powerful 212cc 4-Stroke OHV Westinghouse engine produces up to 4,650 peak watts and 3,600 running watts on gasoline and 4,180 peak watts and 3,240 running watts on propane. The 4 Gal. gas tank with built-in fuel gauge allows the generator to run for up to 14 hours and 16.5 hours on a 20 lb. propane tank.