How Often Should You Change Your Oil? It Depends

 Many drivers still repeat the old rule: change the oil every 5,000 kilometres. Modern engines and oils are different, and cars are different from each other. The right answer for your car is not the same as for your neighbour's car.

Fresh oil keeps the moving parts of the engine protected.
Photo by Tim Mossholder on Unsplash

What decides your oil change interval

• The manufacturer's schedule. It is usually given in distance and in time, whichever comes first. Even a car that is rarely driven needs fresh oil.
• The type of oil. Mineral, semi-synthetic and fully synthetic oils last differently, and some engines require a specific type.
• Your driving conditions. Short trips, stop-and-go traffic, dusty roads, very hot weather and towing are harder on oil. Many manuals call this "severe use" and give a shorter interval.
• The age and condition of the engine. An older engine that burns or leaks oil needs closer attention.
• The oil life monitor, if your car has one.

Where to find the right interval

Look in your owner's manual or service booklet. If you are not sure which schedule applies to you, ask a trusted garage.

How to check your oil level

1. Park on level ground and switch off the engine. Wait a few minutes.
2. Pull out the dipstick and wipe it clean.
3. Push it back in fully, pull it out again and read the level.
4. The oil should be between the minimum and maximum marks. Do not overfill.

Signs your oil needs attention

A low level, gritty or very dirty oil, an oil pressure warning light, a louder engine or a burning smell. Dark colour alone does not always mean bad oil, because oil darkens as it cleans the engine.

Golden tip: Do not stretch the interval to save a little money. Oil changes are cheap compared to engine repairs.

How often do you change your oil? Tell us in the comments.

This article is for general information only. Cars differ, so always follow your owner's manual and ask a qualified mechanic if you are unsure.