I'm all in for mileage, modern oil doesn't really age. The only caveat is that gas in the oil over an extended period of time supposedly reduces it's life, that will happen if the car sees a lot of short trips and doesn't get up to temperature often enough to evaporate it out of the oil. But @
Tcoat is right, for keeping warranty do the change on time.
No problems with the 7.5k mile interval, I'm with @
humfrz the oil change = smoother engine is good old placebo.
And @
Ultramaroon I never fill to the top mark, and keep it between the bottom and mid, old racecar habits die hard.
:P
