IN MY LINE OF WORK IVE USED EVERYTHING OUT THERE. AEROKROIL IS BY FAR AND AWAY THE BEST IVE EVER USED. EXTREMELY EXPENSIVE THOUGH. ONLY PLACE IVE EVER FOUND IT IS A DISTRIBUTER CALLED UNITED REFRIGERATION. IM SURE YOU CAN GET IT ELSEWERE. THIS STUFF IS UNBELIEVABLE. ITS A ORANGE CAN. IF YOU EVER FIND SOME BUY IT GIVE IT A SHOT AND YOU WILL SEE WHAT I MEAN