VP Speed Sauce is a proprietary water-methanol injection fluid that helps control detonation and can increase horsepower and torquewith proper tuning. Speed Sauce water-methanol mixcomes premixed, so its ready to use straight from thebottle. Another key point is that its relatively non-corrosive in certain circumstances. For instance, it wont damage your vehicles paint if it spillsor drips on the body of your car or truck. For diesel applications, the water-methanol injection fluidprovides both increased power and lowers exhaust gas temperatures, allowing for safer towing.