Changed a friends oil over the weekend. 2000 Honda Civic 5spd, with 200k miles. Popped the drain plug, and 1 whole quart of jet black oil came out. I asked if the car has been running well. He says 'yeah, no problems at all... been about 10k miles since the last change'. Oil filter was a Napa PS which looked in rough shape. Filled her up with a P Classic oil filter and 4 quarts of Mobil 2000 HM 5w30, informed him that it burns oil, handed him a quart to store in his car for top ups, and told him to check it monthly. Just another example of how unbelievably pampered my cars are compared to the rest of the world.