During my last (messy) engine oil change, I replaced my oil pan plug with a Fumoto valve (http://www.fumotousa.com/)...... BEST THING EVER for about $40! It has a double sealed ball valve and a spring loaded "release" lever. I can control the flow and turn it on/off during the process (I keep my empty gallon oil containers from the last oil change.... then reuse them for the old oil, next change). Super easy, super clean to pull out a quart or so (if you overfill). I even tried doing an oil "refresh".... since I am leaving on a long trip but not quite yet due for an oil change (only about 2000 miles on the current oil), I drained precisely 4 quarts out and replaced with fresh oil. 20 bucks and I recharged the oil (reduce the dilution ratio). I shouldn't have to change oil part way thru my trip (I'll do a full oil/filter change right away when I get home). I like it! :-laf