What hydraiulic oil do i use for an International 674?

For an International 674 tractor, you typically use a high-quality hydraulic oil that meets the specifications of ISO 46 or SAE 20W-20. It's important to check the owner's manual for any specific recommendations or requirements. Additionally, look for oils that are compatible with the tractor’s hydraulic system to ensure optimal performance and longevity. Always ensure that the oil is clean and free of contaminants.