I drive so little any more, I do it as much by time as miles- about every 8-10 months works out to every 4-5 k miles. Of course, the current two cars are the first ones where I am not adding a quart every month or so (knock on wood)- if you have a car that leaks or burns and keep adding fresh oil, you can stretch it a bit. 3k miles is 'because that is the way we have always done it' and a profit center, IMHO. Even Click and Clack say 3k is too often, with modern oil and engine systems, and unleaded gas. I do make sure to drive long enough and fast enough to get the engines fully heated up, at least once a week.
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aem sends...
aem sends...