I go to Wal-Mart, buy a 5 quart jug of oil and a filter. Takes about 30-60 minutes, because I work slowly. I also don't spill oil all over the place. I hand tighten my filters, therefore they come off by hand as well. I lay newspaper down (the free ones they insist on throwing in my driveway) beforehand, any oil will drip on there, not in my driveway.

And I don't drink, so no beer breaks.