I was wondering if you change it cold or let it warm up for a minute. I would say do it while it is cold cause looks to me like the oil would all be drained to the bottom. If you start it up it looks to me like all the oil would get stired back up along with any metal shavings and take longer to drain and get clean. What do most you guys and gals do? let it warm up or change it without letting it warm up.