Plus-50 II™ exceeds the requirements of the American Petroleum Institute (API) Service Category CK-4 for use in high-speed, four-stroke diesel engines and is backward compatible to meet previous API engine oil classifications. Plus-50 II premium engine oil has been designed to provide advanced lubricant performance in modern low emission engines, and to meet the requirements of heavy-duty off-road applications, as well as lighter-duty applications including on-road vehicles. Extended drain intervals up to 500 hours when using Plus-50 II and John Deere filters for your John Deere engine. Refer to the Operator's Manual to validate the recommended change interval for your specific machine.