Quote:
Originally Posted by Chuck33079
Most quality oils will go longer than 3k with no breakdown in lubrication. Send in a sample to blackstone. They'll tell you exactly how long you can run the oil. I'll bet it's 5k. The 3k interval is outdated. Modern synthetics can handle a lot more than that.
That being said, I still change at 3k even though blackstone told me 4500 is fine.
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Unless you drive real hard, track the car, or run in some other extreme condition, most good-quality oils are good for at least 5000 miles - even more if you drive "normally."
That said... I only do a little spirited driving every now and then (seldom WOT) but I change the oil every 3-4k. Old habits die hard.
If you are really serious about your oil, analysis is your best friend.