This isn't necessarily directed at you, just the board in general. I spent 60,000 dollars on my truck. I do an oil change every 5000 miles or sooner. It never ceases to amaze me how people will run oil to 7500, 10,000 or more miles most likely the difference of 1 oil change a year, maybe 100 bucks. I don't see the value in it. I even change the Buick's every 4000 ish. Just easy piece of mind and it gets me under the hood more often to check stuff out.