At first I thought it was cool that it had an auto shut off when it got to the right PSI but I only used it to inflate the tires a bit because they never go down. I just want to make sure I'm getting the best MPG. When it comes to deflating a flat tire it ALWAYS takes time and it literally started smoking because it gets so freaking hot I thought it was going to explode. I wish I had used it more when I first got it because now I can't return it, but still. You win something, you lose something. I wouldn't recommend that at all