I was considering it years ago for my street car. Consulted several people here who used it and were very happy with it. It is expensive and does NOT solve overheating problems. You have to buy, or it's recommended to buy a refractometer or something to measure the amount of water in your cooling system as you must remove most of it. Also, I do not know if the NHRA allows it either, however.......I nixed the whole idea when I read somewhere that the stuff can be flammable. It's possible that I am a victim of time, (olde fucke), and I have misconstrued my own memory, but because it eliminates rust in your cooling system and develops almost no pressure; leaks are very rare and almost just trickle out. You can add water in an emergency and drive home, remove the stuff, boil out the water, and put it right back in,.....forever! Goodluck with your quest and I hope that I have helped in some way!