quick lube place? I went to my local quick lube the other day to have the oil changed on my 20 year old Silverado 4x4. Last time the oil was changed was Oct 2012. Truck has only had 1700 miles put on it in that time. The guy looked at the last change sticker and said it didn't need changing. Then he pulled the dipstick and saw that the oil still looked like new, though it was 1/2 qt low. He said he would change it for me if I insisted, but that it would be a waste of money. He even grabbed an open bottle of the oil I use and added the half qt (for free). I decided to wait because he was so insistent. This wasn't some teenage employee either. It was the owner I was dealing with. Anyone ever have this happen top them?