How to Change Engine Oil
The standard for most of the cars is to change oil every 5,000 kilometers or three months, whichever comes first or as often as possible depending on your driving habits and the road conditions.
Have it drained only just after a hard drive, at least 15 kilometers. When the oil is hot and thin, sludge will not settle and harden at the bottom of the oil pan. Or if you leave the car at a service station for a change later in the day, the cold sludge won’t flow out.
For additional information click here.