The time interval between lubricant changes is not the same for all vehicles. This time interval is determined by vehicle manufacturers according to the quality level of the lubricant, the engine characteristics, and the vehicle usage conditions. In general, it is associated with two parameters: mileage or use time in months or years, whichever comes first.
Some vehicles have built-in electronic systems that monitor the status of the lubricant in order to inform the driver when the oil must be changed.