
Synthetic engine oil with 5W-30 viscosity grade can be used. Introduction to synthetic engine oil: Synthetic engine oil is artificially manufactured through chemical methods. Depending on different usage purposes, various components of synthetic engine oil can be modified. The development of synthetic engine oil began in the 1930s. At that time, due to the harsh operating conditions of aircraft engine oil which demanded higher performance, some chemical plants started developing and producing synthetic engine oil. Characteristics of synthetic engine oil: Synthetic engine oil is a product of modern chemical technology advancement. It offers numerous advantages, such as higher lubricity than mineral oil, lower friction resistance, better oxidation resistance, and stronger detergency.

I've been driving the Xingyue for over two years now, and I always personally supervise the mechanics during oil changes. The factory usually recommends 5W-30 full synthetic oil, particularly the gray-can Shell OEM version that meets Geely's SN-grade standards. In northern winters, it's better to use 0W-grade oil for better cold resistance, while 5W is sufficient year-round in the south. I've personally tried three brands: Castrol Edge offers exceptionally smooth cold starts, Mobil provides quicker power response but is more expensive, while the OEM oil offers the best value for money. A reminder to owners: always check for the ACEA A3/B4 or A5/B5 certification on the oil can – never use mineral oil as it harms the engine. Recommended oil change intervals are between 7,500-10,000 km, which can be slightly extended for frequent highway driving. During , make sure the mechanic checks if the oil filter is compatible – otherwise even the best oil won't perform well.

As an owner who frequently drives on mountain roads, I believe the choice of engine oil for the Xingyue depends on driving habits. For regular commuting, 5W-30 full synthetic is sufficient, but for aggressive driving, upgrading to 0W-40 provides better engine protection. Last month, I conducted a test: Shell Helix Ultra maintained stable oil pressure under high temperatures, while Mobil 1 offered quicker acceleration but slightly higher fuel consumption. The key is to look for the API SP certification mark on the oil container, which is cleaner and more environmentally friendly than the older SN standard. A tip: before changing the oil, have the mechanic drain the old oil for over ten minutes to avoid mixing oils and affecting performance. Pay attention to the engine sound during cold starts; a metal friction noise indicates that the oil film isn't forming quickly enough. For my next , I plan to try a specialized oil with turbo protection.

After checking the Xingyue manual, it clearly requires 5W-30 full synthetic oil. In practice, the 4S shops commonly use two types: the original Geely oil produced by Shell, or Castrol Edge. Focus on two key indicators: the ACEA A5/B5 standard is suitable for new engines, and the HTHS value must be greater than 3.5 to protect the turbo. I have seen cases where owners mistakenly used 10W-40, leading to a sharp increase in fuel consumption. It is recommended to use the original oil as per the manual for the first three years, and after the warranty period, you can choose international brands of the same grade. Remember to add about 4.5 liters of oil; too much can damage the catalytic converter. Do not exceed one year or 10,000 kilometers between maintenance intervals.

After three years of driving the Xingyue and changing the oil six times, I've gathered some practical tips. In northern winters, 0W-30 is a must—it starts right up even at -30°C. In the south, 5W-30 is the most economical year-round. Here are three tested and recommended options: the original Shell oil is quiet and fuel-efficient, Mobil EP offers long-lasting performance, and Fuchs GT1 excels in cleaning. Pay attention: if the oil cap is labeled 'dexos1,' don’t switch oil types randomly. A handy trick: note the oil level after and check the dipstick monthly—excessive consumption could indicate piston ring issues. Modified cars should opt for high-molybdenum oil to reduce wear. And never believe the nonsense about fuel additives replacing engine oil.

Choosing engine oil primarily depends on viscosity certification. The Xingyue recommends 5W-30 full synthetic. The number before W indicates low-temperature fluidity; 5W suits environments down to -30°C. The 30 refers to high-temperature viscosity, which is ideal for protecting turbochargers. Ensure the barrel is labeled with API SP/SN PLUS certification, as the newer SP grade better prevents low-speed pre-ignition. Observations of different brands show: OEM oils have higher detergent content, while Mobil offers more anti-wear additives. Never mix oils from different brands, as chemical additives may conflict. For aggressive drivers, check oil quality every 5,000 km—replace early if it turns black or thickens. Models with particulate filters must use low-ash oil.


