You should change the oil at about 4,000 miles. The oil change indicator should be used as a guide, not as gospel. You know your own driving habits and 4k miles is a good change interval.BlackG6 said:I've had my G6 for about 2 1/2 months now with a little over 4,000 miles and I'm around 40%. I still have a while to go yet. To be honest, I'm not used to this sort of system. I've always got my oil changed at 3,000 mile intervals. So, it makes me a little nervous.