Stanadyne Performance Formula Injector Cleaner is formulated to prevent and eliminate Internal Diesel Injector Deposits (IDID) commonly found in Common Rail and other type of Injectors. These deposits affect injector performance, which results in various engine related issues. Performance Formula Injector Cleaner is a “One Tank” Clean-Up of concentrated detergents designed to eliminate & prevent internal and external deposits from forming on injectors. The result is restored Engine Performance, Increased Horsepower, and Improved Fuel Economy. Price above includes: -> 4 - 32oz Bottles of Diesel Injector Cleaner. -> One bottle treats 100 gallons of diesel fuel. -> Four bottles treat 400 gallons of diesel fuel. Other benefits and recommendations: 1) Lubricates fuel system components to help prevent wear 2) Cetane improver improves combustion resulting in better starting, smoother running, and reduced engine noise 3) Use 4 – 6 times per year as preventive maintenance or when engine performance issues arise 4) Continued use of Performance Formula All Season or Performance Formula Warm Weather recommended with every fill-up Stanadyne Fuel Additives can be stored for up to 24 months without deteriorating if they are unopened and in a suitable storage environment. Additives will begin to deteriorate when stored longer or improperly. Authorized Stanadyne Dealer:> 1) Diamond Diesel & Turbocharger Service>