Bigboy Topsider Mvp Oil Changermulti-purpose Pump . This was the top-rated manual pump in a recent Powerboat Reports test. Although they liked electric pumps better they called the Topsider the only manual wed seriously consider for changing our oil. Prime the vacuum pump with 50 to 60 strokes release the pinch clamp on its suction probe and return in 8 to 10 minutes to find oil and sludge drained into a 2 gallon container Perfect for changing oil inside cramped engine rooms Not to be used with gasoline
