Nationallube Speedx Eco oil is blended from premium quality base stocks and most advanced additives to take care of extra heat generated during combustion of gas in the engines. It is dedicated engine oil formulated for vehicle operating on Natural gas, LPG and dual fuels. Recommended for CNG / LPG fitted, Cars, Taxis, Auto Rickshaws and Three wheelers (4 stroke engines) Performance Level: Exceeds API SF/CD