What weight hydraulic oil should be used in a case 430 tractor?

For a Case 430 tractor, it is generally recommended to use a hydraulic oil with a viscosity grade of ISO 46 or an equivalent AW (Anti-Wear) hydraulic fluid. The specific oil type may vary based on operating conditions and temperatures, so it's always best to consult the tractor's owner's manual for manufacturer specifications. Additionally, using a high-quality oil that meets the required standards can help ensure optimal performance and longevity of the hydraulic system.