ZH3158A is a functional additive package developed for API CF-4 land diesel engineoil.It is suitable for high-speed naturally aspirated,turbocharging 4-stroke diesel engine,as well as other diesel engine require use API CF-4 diesel engine oil.In the aspect of oil consumption and piston deposit control, the performance is better than CE,CD and can instead of CE,CD.The oil is particularly suitable for highway heavy duty truck.