What type hydraulic oil do you need for a farmtrac 555?

For a Farmtrac 555, you typically need a hydraulic oil that meets the specifications of ISO VG 46 or equivalent. It's important to check the owner's manual for specific recommendations, as it may also suggest using oil that meets certain performance standards like SAE 20W-50. Always ensure the hydraulic oil is clean and free from contaminants to maintain optimal performance.