[jclark003]

There are a lot of factors that determine oil life. Cat now publishes maintenance intervals based on hours, months, and fuel burn. Whichever interval comes first. Follow their guidelines and use a high grade oil that meets Cat specifications and you should be fine. guessing they don't want you pushing the oil over 12 months regardless of how many hours. Regular sampling is a good idea. I pull fluid samples every 24 months.