never was big on having cold oil running down my arm and hot oil even more so. When I drain oil, I always do it when the engine is hot. I pull the plug and then let it drain. I then briefly crank the engine over and if it starts, I shut it down immediately. This drains the rest of the oil that is in the pump and galleys. When the engine is cold, I remove the filter and install another. Fill engine with the correct amount of oil and then crank it over, but try not to allow it to start. On my old diesel, there was a stop button that I kept depressed when doing this. Never spun a bearing and the old diesel had over 220,000 miles on it when I sold it. That person drove it for another 100,000 miles before the body gave out to rust. If you take care of your engine, it will last for almost forever....... my experiance......