I'm coming up to the 9000 mile mark and debating about whether to get my oil changed or not. It's been 5000+/- and 8 months since the last oil change. I'm heading to Savannah next week which is about 650 miles from where I'm sitting. I don't drive it as hard as I should apparently because ECU leveled itself out to a lame mode and thanks to this forum I disconnected the battery and now it back in Boss mode. I know Ford says wait for the nanny light but I don't know whether it's based on mileage or a particulate measurement in the oil. Any thoughts on this?