High performance engines require coolant to transfer as much heat as possible. As cylinder head temperatures increase, so does the likelihood of detonation and power loss unless ignition timing is retarded. Under extreme conditions, this can also result in overheating and engine damage. Hy-Per Lube Super Coolant reduces the surface tension of coolant, allowing it to more deeply penetrate metal surfaces at critical heat transfer areas inside the engine and radiator. This results in more heat being transferred away from cylinder heads and a reduction in engine operating temperatures. Importantly, cooler cylinder head temperatures also allow the engine ECU to safely advance ignition timing, which results in more horsepower. Street applications running a 50/50 mix will run 8-10°F cooler, and racing applications running straight water will run up to 25°F cooler. Actual cylinder head temperatures can be reduced by up to 50°F. When running Hy-Per Lube Super Coolant with straight water or a Water/Anti-Freeze mix we DO NOT recommend using Distilled Water. We recommend using Softened Tap Water or Bottled drinking water for best results. Please click on this link to learn more about why we do not recommend using Distilled Water. Super Coolant is formulated to protect all metals found in cooling systems, including ALUMINUM. Hy-Per Lube Super Coolant provides complete protection from rust, corrosion, and electrolysis. This is particularly important in straight water applications where there is no corrosion protection being provided by the corrosion inhibitors in antifreeze.