Electric Generator Operating hours: 14,720 (can be increased) Soundproof Includes 10 diesel tanks Net power: 28 kW, and some hoses that had diesel leaks have been replaced. Maintenance tools to change the filters are included. The battery was changed 3 months prior to the advertisement. The dynamo was replaced at the dealership 3 months prior to the advertisement. The oil is changed every 250 hours, sometimes with slight exceeding; the type of oil used is Shell R4.