Every major auto parts store sells a water pump lubricant/cooling system anti-corrosion additive. Use the 50/50 mix and that anti-corrosion additive and that's it. You don't need Water Wetter for daily driving. As mentioned previously, it's used in racing because using Ethylene Glycol is against the rules. Makes the track surface slippery when spilled. This may not seem like a big deal when you have four wheels on the track, but picture a motorcycle hitting that stuff! Like skating on
oil with water on top.