Mannol 9955 Cetane Plus is a premium diesel fuel additive engineered in Germany to boost cetane number by 2–5 units and enhance engine performance. This advanced formulation cleans fuel injectors, combustion chamber, valves, pistons and diesel particulate filters, effectively removing soot, varnish, carbon and ash. By promoting more complete combustion this additive increases engine power, smooths idling, reduces noise and vibration, and improves cold start reliability. It also protects injectors and high pressure pumps against wear and corrosion while lowering fuel consumption and exhaust emissions. Compatible with all diesel fuels and engines including turbocharged systems, exhaust aftertreatment systems and biodiesel blends, Mannol 9955 is designed for regular use. Simply pour one 450 ml bottle into a full tank (approx 135 L) to maintain optimal fuel system health and enhance diesel engine efficiency.