My response was not very thorough. The point I'm trying to make is that it is POSSIBLE to have minimal timing stretch with VERY FREQUENT oil change intervals. In this case, frequent would be a MAXIMUM of 3,000 for highway driven cars, and less if driven short hops. Anything further than that could allow excessive microscopic particulate matter to take its toll.

Additionally, draining the oil while hot, and draining for an extended period goes a long way toward getting the last drops of nasty sludge from the bottom. Those last nasty drops that come out are the nastiest, sludgiest, particulate filled portions of all the oil that comes out.

This is why I believe in hot, overnight drains.

Merry Christmas,