I watched a video of a guy using a tool similar to this one to change his power steering fluid. I used it for the same job and it worked great. You can use this for any fluid change you may need to do on your machines. To use this with an air compressor you probably need at least a 20 gallon one. Not everyone has an air compressor and that is why I like that this also has the option to hand pump it for the vacuum. Anther nice thing about this is when pouring out the fluid it has small spout design to guide where it goes, not just a round hole which could cause it to not pour smoothly. The overall build quality of this is very nice. It feels like it is strong plastic that I don't have to worry about braking easily. This is a good tool to have for anyone that does maintenance on their machines.