Nice and simple pump! It works perfectly once you read the instructions and see how it works. First, do a test with some water. You don't need to press it 50 times; if this happens, you have either set it up incorrectly or your pump has a problem from the start.

It works, but with every (pump) a little gasoline comes out, indeed it makes you feel like you're going to lose your mind; to pump 1 liter, I had to pump 30 times. And I am an electrician, my hands are tired, and yes, I placed the container lower and all that, the mechanism inside (plastic) has 2 valves, one of which pulls and the other releases from the other side, it cannot have a continuous flow.

Most cars, 99.9%, have a fuel theft protection screen. My car, since 1991, has a screen before the fuel. I wonder how some people claim that fuel was stolen from their cars.

Perfect product, it does exactly what it says, the water flow is quite satisfactory, be careful to install the pump in the right direction (otherwise there won't be a continuous flow of liquid) and there should be a small height difference between the containers.

It is a very nice pump for transferring fuel easily and effortlessly. It contains small valves in the balloon that prevent the fuel from returning, and once it reaches the outlet, a natural flow is achieved as long as there is an imbalance between the two fuel tanks. The diameter of the plastic tube achieves a satisfactory flow.

While it sucks in as much as you press it, it doesn't have quick recovery and you don't achieve natural flow (you have to keep pressing continuously). To empty a 12-liter car fuel tank, my fingers died.