I wish I had your problem! Living 20 miles from the nearest supermarket, and commuting 80 miles one way to work twice a week makes it necessary to change oil at least every two months, sometimes more often. Fortunately, I can recycle oil at work with no expense. The upside is living 20 miles from the nearest town in either direction, and they're small ones! My hunting/shooting range is the back yard, and nobody gripes about the collection of stovebolts littering the 100-acre property. It would get hazardous to their health if they did, BTW!
Jerry