Oil quantity from dry requires 3.4 extra quarts. Putting the rear wheels on ramps or jacking the back of the car tilts the oil drain upward (drain is at rear of pan) and maybe keeps and extra quart (or half) in pan. So a normal oil change is possible to only remove 50% of the dirty oil. Anyone ever disconnect the oil cooler lines to empty all the old dirty oil? Especially the first change to synthetic.