The 05 V6 Tacoma has a removable plug to drain the oil when changing the filter. It's a simple process, but it still involves squeezing a container beneath the filter to catch the old oil. My idea is to run a small hose from the plug under the filter drain down to the oil pan so that all I would have to do is unscrew the filter, and it would drain in the same bucket as the rest of the oil. The only part I can't figure out is what to use to clamp off the hose so that oil doesn't continue to drain for 3 days. I haven't heard any great inventions concerning this yet, just trying to get the ball rolling.