Ive changed the oil 2 weeks ago, and until 4 days ago, Ive driven 100 miles, mostly city. Now im at 2700 (road trip) with the 2600 of these miles being highway miles.
When should I change oil?
I change my vehicle's oil: 5k for conventional, 7k for synthetic. Just as long as you change it regularly and use a decent oil and filter.