I do oil changes everyday at work, the amount of cars that come in with the oil life on 0% are well, I dont have enough fingers or toes to count all of them.
I then like to glance at the previous oil change and when the return mileage should have been, most if not all are over 2,000 miles in the very least. Some as far as 5,000 on regular oil.
And they wonder why the oil is either low or looks like black death.
So to some it up, these oil life things suck.