Shield Diesel Injector Cleaner, In A 350Ml Bottle, Is Specifically Formulated For Diesel Engines To Clean And Maintain Fuel Injectors. It Effectively Removes Carbon Deposits, Varnish, And Other Contaminants That Can Affect Injector Performance. By Improving Injector Efficiency, This Cleaner Enhances Engine Performance, Fuel Economy, And Reduces Emissions. Regular Use Helps To Maintain Optimal Engine Operation And Extend The Life Of The Fuel System Components.