Review on Efficient Oil Extractor: Stens 051-703 - Simplify Oil Changes and Maintenance by Rick Rogers

Attempting to change the oil in my boat engines, 2 4.3 liter v6s. On the first engine, after 35 strokes on the pump, the canister collapsed and the handle popped out of the retaining ledge. He took out the whistle, but the canister didn't recover its shape. Then the connection where the hoses are connected further broke up. The second engine didn't suck oil unless I kept pulling on the hose from below to get a charge of air. it.made a huge mess.bad design.need to pump oil with a pump,no suction system the thin wall of the tank can't even withstand up to half the recommended suction pressure.big disappointment.a waste of money. According to the instructions, the engine oil was warmed up. I knew better than I ordered this plastic toy that it wasn't going to work properly. Back to Revain.