Yes, I am out of touch with some modern realities. GM says we are to use their "oil life monitor," and judging on that, many get 5000-7500 miles before changing their oil. I was gently chastised, in a one-to-one conversation, by Dave Hill, previous Corvette Chief Engineer, that I was "throwing my money away" by using the old 3,000 oil change routine. He was/is probably right. And yet, I still do that. Have had over 50 vehicles in my life, some approached 200,000 miles before I sold them, and not one had a motor problem, so maybe I am throwing my money away, but it is cheap insurance to me, i.e., new motor on my C6 Z06, for example would be $15,000....