11 KW home standby generator maintenance kit, for units manufactured in 2013 or later, maintenance is recommended at every 200 hours or 2 years, if running in a dusty environment, more frequent maintenance may be required, maintenance intervals may differper model, refer to the generator Owner’s manual for more information, kit includes, air filter, oil filter, spark plugs, oil funnel, chamois & a reminder sticker, recommended oil: synthetic 5w-30 for temperatures between -20 & 1100 Degree Fahrenheit, 10w-30 for temperatures between -10 & 40 Degree Fahrenheit, SAE 30 for temperatures between 32 & 110 Degree Fahrenheit, oil not included.