What is the oil change frequency of cat 920 excavator?

The oil change frequency for a Cat 920 excavator typically depends on operating conditions and usage, but it is generally recommended to change the hydraulic oil every 1,000 hours of operation or annually, whichever comes first. Additionally, the engine oil should be changed every 250 to 500 hours, depending on factors such as the severity of use and environment. Always refer to the specific operator's manual for the machine for the most accurate maintenance guidelines.