Water and particle contamination within your fuel alters the fuels lubricity and forms a build up in your injection system, which causes accelerated wear and decreased power. Contaminated fuel is the primary cause of engine and fuel system failure. By polishing your fuel, you reduce the risk of these failures, and also extend the life of injectors and injection components. An added benefit is the increase in power and increase in fuel efficiency. Fuel polishing is the most efficient and cost effective way of removing the harmful contaminants that lurk in your fuel tanks.