Instruct: Classify Amazon reviews into positive or negative sentiment
Query: does not work too well for small amounts of gas in tank

I tried to remove gasoline from my snowblower tank and couldn't maintain a continuous flow to siphon 'all' of the gas out of the tank. It doesn't work for small amounts of gas in the bottom of the tank. I'm going to try Terapump rotary manual drum pump which has good reviews.