The proper functioning of the cat excavator as a part of heavy mechanical equipment is essential.The volume of hydraulic fluid is one of the key factors in ensuring the efficient operation of the equipment.For different types of Cat excavators, hydraulic fluids will vary.In the case of the Cat320D excavator, the standard volume of oil in its hydraulic system is approximately 240-260 litres, but the exact values still need to be verified by reference to official manuals or with professional technicians.In order to accurately capture the replacement and addition of hydraulic fluids for the Cat excavator, regular inspections are required and adjusted for actual consumption.When selecting hydraulic fluids, it is important to select high-quality hydraulic fluids that meet the requirements of the Cat plant in order to ensure the performance of excavators and the longevity of hydraulic systems.In summary, there is no consistent fixed answer to the question of "How many litres of hydraulic fluid for the Cat excavator", which must be determined on the basis of the specific type of machine, and emphasizes that the quality control and reasonable maintenance of hydraulic fluids are equally important.