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 and prevent internal and external deposits from forming on injectors. The result is: 1) Restored Engine Performance. 2) Increased Horsepower. 3) Improved Fuel Economy. Authorized Stanadyne Dealer: 1) Diamond Diesel & Turbocharger Service Price above includes: 6 Pint Bottles of Stanadyne Performance Formula Diesel Injector Cleaner. Each bottle treats 50 gallons of diesel fuel. 6 Bottles treats 300 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 3) Reduces engine noise Use 4 to 6 times per year as preventive maintenance or when engine performance issues arise Continued use of Performance Formula All Season or Performance Formula Warm Weather recommended with every fill-up SEE LEGAL DISCLAIMER FOR SHIPPING RESTRICTIONS.