The Motorcraft Fluid VC-8 Diesel Cooling System Additive is designed to significantly improve the efficiency and prolong the lifespan of any diesel engine's cooling system. This 16-ounce additive is a one-time use liquid that helps to break down and remove harmful deposits from engine blocks, waterways, and fuel injectors. Its key ingredient, a proprietary blend of cutting-edge technology, works in synergy with your engine's natural processes to clean and protect your engine, reducing harmful emissions. With its superior performance and affordability, the Motorcraft Fluid VC-8 Diesel Cooling System Additive is an essential product for any diesel vehicle owner.