How often should I change my oil?

If you are told to change your oil in 6 months or after a certain number of kilometers by your dealer, you are not alone. But before letting your dealer upsell you, read your owner’s manual. This is what my owner’s manual instructs:

This vehicle has a computer system that indicates when to change the engine oil and filter. This is based on a combination of factors which include engine revolutions, engine temperature, and miles driven. Based on driving conditions, the mileage at which an oil change is indicated can vary considerably. For the oil life system to work properly, the system must be reset every time the oil is changed.

When the system has calculated that oil life has been diminished, it indicates that an oil change is necessary. A CHANGE ENGINE OIL SOON message displays. Change the oil as soon as possible within the next 1000 km (600 mi). It is possible that, if driving under the best conditions, the oil life system may indicate that an oil change is not necessary for up to a year. The engine oil and filter must be changed at least once a year and, at this time, the system must be reset.

If you are not yet convinced, watch this investigation by Marketplace.