http://www.ehow.com/how_4493211_change-oil-h2.html
Mine takes a hair less than 6 qts with the filter. I can't over emphasize what has been said about the filter to tighten it well. With the skid plate you might not get all the torque you want on it with your hand, so I always use a filter wrench too. I've always used Mobil 1 synthetic in my engine and changed every 4000 miles which is normally @ 30% oil life left on my dash display.