Cat 289
New member
Unless you have contamination from some issue , no reason to change hydraulic oil every year, filter , yes, Most hydraulic oil is "self changing" around here!LOL!Between 2 large Kubota's and the truck and 2 cars, I generate a lot of used fluids. Each tractor alone takes 15 gallons on a hydraulic fill, so that is 30 there, every year plus all the crankcase used oil and I still run out about January.