I pop the cap off the valve cover, pull the dip stick, drain the filter till IT stops flowing, then open Mr. Fumoto, and wait until IT stops dripping. It only takes 15 minutes or so. After both have stopped I replace the filter, close Mr. Fumoto, and filler her up. Someone mentioned vaccuum and pressure release, I know that happens with mine, I open all ports at the same time to let it drain. Two pans and everything. Always get 4 full quarts out of it that way.