Generac 5984 Maintenance Kit for 2.4L Engines for 36,000 & 60,000 Oil must be purchased separately based on expected temperature range usage. Maintenance is recommended every 200 hours or 2 years Comes with everything necessary to perform a complete maintenance on 2.4L 36,000 and 60 ,000 liquid-cooled generators. 90 Day Warranty 90 Day Warranty