Love my Protank II, but the higher VG juices clogged it! I had to rinse and dry burn and it still didn't FULLY clear it up to how great it was hitting when I first opened it. Use 50/50 juice ONLY. That would be my recommendation. I guess I will have to change the head now and then buy more.. C'mon inventors come up with something that doesn't clog!! I would still recommend the tank though, easy to take apart and when the draw is good it is GREAT!