Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Hunk of Junk

I just received this product and I have to say it's a real piece of junk. I purchased it to change the oil on my 99 ML 320 because I got tired of paying $125 for an oil change. Anyway, after wrestling with it for 3 hours, I finally jury rigged a line up to my shop vac and sucked the oil out in 5 minutes.I would not recommend this product at all. I pumped my "a**" off for three hours and frankly even at my advanced age I can pee a better stream than what came out of the hose. The instructions say "Pump 10-12 times" and the flow will start.....total BS. Do Not Buy This Product unless you're looking to exercise your back and arms. It's just plain useless for oil changes.