It is a pump for amateur use and works very well until it gets gasoline in the pump. If for some reason it fills the container and pulls some gasoline into the pump, it gets ruined. No matter how much cleaning you do, it has lost the easy movement for pumping and is essentially for throwing away. However, until that happened to me, it worked very well and emptied a 2-liter tank very quickly.

So I bought this specific manual oil change pump to change the oil of my vehicle by myself.
First of all, it is not the gray color that it shows in the photo, it is white.
As for the construction, well, it is nothing special, simple to use, it will do the job, maybe you will struggle a bit and get a little dirty, but it will drain the oil. You should be careful not to overheat the oil because the hose and the container will soften due to the heat. Could the construction be a bit better? Yes, it could, like that part that goes and seals in the container, it could be screwable, it could also have a transparent part to easily distinguish when the container is full, and it could have a larger capacity in liters. Okay, if you want to invest something more, of course, you will get something better, there are also electric ones on the market, I think that with this money, the quality and durability of the product are proportional. In general, you will do your job, it is until you find the hang of it, also besides engine oil pumping, you can pump fuel or change the oil from the power steering container, etc.