Where to fill and what oil to use in a case 580K backhoe?

To fill the hydraulic oil in a Case 580K backhoe, locate the hydraulic reservoir, which is typically found near the rear of the machine. Use a high-quality hydraulic oil that meets the manufacturer's specifications, usually AW 32 or ISO 46 hydraulic fluid. Ensure the oil is clean and free of contaminants before filling, and check the dipstick to ensure the correct level after filling. Always refer to the operator's manual for specific oil recommendations and capacities.