Engine oil replacement interval is often given by the OEM which should be followed. But in many cases engine condition and the oil which is being used also determines the intervals.
First of all it should be noted that the mineral oil has lower mileage and drain interval. They should be changed after 3,000 km maximum. On the other hand, synthetic oil stays longer and in Pakistan all synthetic oil at least stay for 5,000 km to 20,000 km.
Factors and Conditions That “Shorten” the Oil Change Interval: