The use and replacement of oil in daily maintenance is essential for the use of Cat excavators as a highly recognized heavy mechanical piece of equipment.First of all, it's clear that the Cat excavator does have organic oil and that the exact number of litres of oil is related to different types of excavators.In the case of Cat320D excavators, the oil capacity is approximately between 16 and 20 litres, while equipment of larger or smaller sizes will vary.Therefore, when purchasing or replacing oil for your Cat excavator, it is important to ensure that the right volume of oil is accurately added, taking into account the recommended values in the equipment operations manual, in order to maintain the good functioning of the machine and extend its useful life.