Quote:
Originally Posted by Broken Arrow
How often do you really have to change your oil?
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It depends on how you use your engine.
On one extreme, if you drive in NASCAR, you have to change your oil after every race.
On the other extreme, if you store your car and don't drive at all, once a year will suffice.
The average car will be somewhere in between. At the very least, go by what the manufacturer recommends, which is typically between 5000-75000 miles for new cars.
I recommend changing the oil every 3,000 miles or 3 months. It may seem excessive but the cost of an oil change is small compared to the cost of replacing an engine or a new car. It's not urgen that you do it on the dot, but you shouldn't let it go on too long.