Feeling Oily?

My car has this cool feature that tells me the oil life. The oil life of the oil, for clarification. When the oil life gets down to 15% it will indicate it to me as soon as I turn on my car, and it won't go away until I clear it with a push of a nifty button. Until I have the oil changed, that reminder will come on every time I turn on my car. I was shocked when I saw that the sticker (see top left corner of your front windshield) said that I was 800 miles over! I made an appointment right away to get the oil changed (yes, I have to make appointments to get the oil changed) It wasn't until I left work early to talk to "Kenny" (if thats his real name) that I learned that they just try to estimate with the sticker mileage. I was told by "Kenny" that I should always go by the indicator on the car. Good to know, "Kenny", good to know.