Review on MASTERCOOL 43306 Cooling System Pressure by Will Bremer

There are many reasons I dislike this product.1. Says he has a cap for a Peterbilt and no caps for one of my Peterbilt.2s. Kenworth cap fits but leaks. It's no good if you try to maintain a vacuum or pressurize the system.3. To switch from vacuum to filling you have to slide it to one side or the other. It worked the first time. Used the second time it didn't move at all. I had to tap it with a hammer to make it move. This kit didn't impress me at all and I spent over $200. I was really hoping this would work for checking pressure and vacuum/inflation but no such luck. I do not recommend this product