The service manual for my car says to replace the oil and filter every 15,000km (9300mi) or one year after the last change.
I don’t drive the car much so the mileage is well below 15,000km when I reach one year after the last change. So I have been replacing the oil every year but I wait until I reach 15,000km before changing the filter, which is about once every third oil change.
I figure it is unnecessary to replace the filter before I reach 15,000km because the filter will not deteriorate over time like oil does because it is made of metal and media material. Also , a filter actually performs better as it gets dirty. It blocks smaller and smaller particles the dirtier it gets (provided the bypass doesn’t open).
What do you think? Is it necessary to change the oil filter every year, regardless of the mileage since the last change?
I don’t drive the car much so the mileage is well below 15,000km when I reach one year after the last change. So I have been replacing the oil every year but I wait until I reach 15,000km before changing the filter, which is about once every third oil change.
I figure it is unnecessary to replace the filter before I reach 15,000km because the filter will not deteriorate over time like oil does because it is made of metal and media material. Also , a filter actually performs better as it gets dirty. It blocks smaller and smaller particles the dirtier it gets (provided the bypass doesn’t open).
What do you think? Is it necessary to change the oil filter every year, regardless of the mileage since the last change?