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Originally Posted by rick3000
Hi,
So I just got back from getting my oil changed, and my mechanic mentioned something very interesting. He told me that Porsche and all these new cars that say to change your oil every 15-20k miles are crazy. He said it doesn't matter what car you have you should change it every 3k miles, 4k at the most. He also said that cars that change the oil at those large intervals are more likely to have an engine failure, he told me about a Cadillac, a Cayenne, and few other cars where the owners did the 15k mile oil change intervals and they all needed engine replacements (the Cayenne at 50k miles).
So do you guys think there is a valid connection between your oil change interval and your likely hood of an engine failure?
-Rick  |
I have studied this issue for a long time and don't believe there is one answer. I do think your mechanic is half right: 15-20K is insane on any oil save MAYBE Red Line.
On the other hand, 3-4K on a synthetic is a waste of money and MAY result in more wear.
I like 7500 miles on the Box unless one is way into tracking the car. All bets off on that issue for me.