This is my first time using a vacuum pump to change the oil. I have been changing the oil the traditional way by removing the drain plug for many years. So far, this is a really good option. You don't need to raise the car, which is a much safer way even if you are using ramps. I used a compressor to get the vacuum. It works well, but you need a large enough compressor. I think mine is 4 gallons, and the compressor stayed on, but it worked. There are some improvement that they can make. They have marks that you 1 quart, 2 quarts... These marks are very hard to see, they need to be painted, even a sharpie would help. The suction tube attaches just under the handle, if the handle is not turned, you will drain the oil on the handle. The suction tube also twists on, a counter-clockwise twist to lock it on; this is backwards, in other words, traditional tightening, is now loosening. Overall, it's a good tool, it would not take to much to make it better. Also, I an storing it in the cardboard box it came in, maybe something better would be nice.