Desl-Shok from USA Fuel Service is an easy way to increase fuel economy, extend component service life, and reduce hard starting and engine downtime. Desl-Shok eliminates condensation and dissolves sludge in the fuel tank. The formula cleans injectors, carburetors, and fuel lines to promote a cleaner burn that, in turn, reduces carbon build-up in the motor and exhaust. It also decreases smoke and engine noise. Regular use of Desl-Shok stabilizes and boosts cetane levels and acts as a lubricant throughout the fuel system. The formula contains no acids or alcohol, so it won't harm gaskets, hoses, seals and other components.