i used to work at an oil change place in lawrenceville. regular guy had his truck serviced there every time he had the oil changed since new, strictly with pennzoil.(it was a 96 or 97 gmc 1500). he hit 1 million miles. theres a copy of an article in the paper, a picture of the guy and truck, trucks odometer, and the brand new truck pennzoil gave him framed on the wall inside the shop. they took the old one back to the factory for research or some such thing.

pretty crazy, but the guy drive to like north carolina and back every day.