Someone listed the FSS reset and that doesn't work on my car. Being a Volvo mechanic all we have to do is hold in the trip reset button with the key off/out, then turn the key to position II (run not start) and keep holding in the trip reset. This changes the FSS on my car instead of that complicated crap.

Just an option.

Also about the emptying of oil, because I'm a mechanic I have a lift I can do my oil changes at so I know most of you don't have this option but if you do you can always adjust the legs so that the car isn't level to aid in emptying the oil out. Granted the windage tray and other internals to the oil sump (pan) will preclude from getting rid of all the used oil, but there shouldn't be a 1/2 quart left in there I don't think.