In the field of engine oil selection, Shell Helix Ultra series, with its PurePlus gas-to-liquid technology and patented cleaning agents, can reduce sludge buildup by 90% and improve anti-wear performance by 60%, making it the first choice for German and turbocharged models. Its 5W-40 grade is suitable for most luxury vehicles. The Mobil 1 series is renowned for its Supersyn technology, maintaining fluidity even at -40℃. Mobil 1 Gold 0W-40 is particularly suitable for high-performance cars, offering an ultra-long oil change interval of 18,000 kilometres. Castrol Edge utilizes Titanium Fluid Strength Technology, improving fuel economy by 2.3% in hybrid models. Great Wall Jixingle JP1 has obtained Porsche C30 certification, demonstrating a technological breakthrough in domestic engine oils. Viscosity selection should match the vehicle model and climate: 0W series is recommended in northern regions to ensure cold-start performance; 40 viscosity is recommended for older vehicles to enhance sealing; while 30 viscosity is sufficient for newer cars. Currently, fully synthetic engine oils account for over 60% of the market share, with API SP being the highest standard. The reducer oil co-developed by Idemitsu and CATL operates within a temperature range of -50 to 180℃, reflecting emerging industry trends.
