a baster that has squeeze bulb on top and suck fluid out 1st. Fresh refill probably not a bad idea anyway. If you can find a quart of Redline synthetic PS fluid, you'll probably like the difference. If not ATF. Shouldn't gush out. Once hose is off whatever fluid in resevor is going to drain. Apparently your comfortable with the internet, so to prevent or address problems, enjoy the link. Search here works well too.