Which engine oil is best for Changan CS55?

[VonChristopher]

For the Changan CS55, Shell HX7 5w-40 synthetic engine oil is recommended, with an oil capacity of approximately 4 liters. Here is some relevant information: 1. Engine oil, also known as engine lubricant, has a density of about 0.91×10³ (kg/m³). It serves multiple functions such as lubrication and friction reduction, auxiliary cooling, sealing and leak prevention, rust and corrosion protection, and shock absorption. It is often referred to as the "blood" of a car. 2. Gasoline engine oils are divided into two types: mineral oil and synthetic oil. Synthetic oils are further categorized into semi-synthetic and full-synthetic oils. 3. Engine oil consists of base oil and additives. The base oil is the main component of lubricating oil, determining its fundamental properties, while additives compensate for and improve the shortcomings of the base oil, providing new characteristics. It is a crucial part of lubricating oil. The engine is the heart of a car, containing many metal parts that move against each other at high speeds, in harsh environments, and under high temperatures.

[MacElla]

Having driven the Changan CS55 for several years, I've concluded that 5W-30 full synthetic oil works best, as the user manual emphasizes this viscosity. Synthetic oil is more durable than mineral oil, protecting engine components and reducing wear, especially in stop-and-go city driving or long highway trips. I personally change it every 8,000 kilometers, experiencing stable oil pressure, low noise, and no cold start issues in winter. I recommend brands like Shell or Castrol with proper certifications—don’t cheap out on counterfeit products. By the way, always check the oil filter during oil changes to ensure it’s clean, as dirty oil can affect overall performance. Regular maintenance extends engine life and saves on major repairs. Using the wrong oil can reduce power or increase fuel consumption—safety first.

[GrantDella]

Buddy, changing to a 5W-30 synthetic oil for the Changan CS55 is a solid choice. The manual states it suits most driving conditions. Since I often drive in city traffic with frequent congestion, this viscosity offers good protection, ensuring smooth engine operation and lower fuel consumption. Synthetic oil can last up to 10,000 kilometers before needing a change, making it cost-effective—no need for frequent changes that waste money. It remains stable in hot weather, and brands like Mobil or Great Wall are reliable choices—don’t skimp on this small expense. Always go to a professional service center for oil changes to avoid counterfeit products. Also, remember to replace the oil filter at the same time—it’s a simple and worry-free maintenance routine. Keeping your car in top condition ensures a more secure daily driving experience.

[FelixLynn]

The Changan CS55 is recommended to use 5W-30 full synthetic oil, with viscosity matching the engine design to ensure fluidity. This oil can reduce friction and improve performance, while the manual specifies the viscosity to prevent damage. The replacement cycle is approximately 8,000 kilometers, shorter for city driving. Avoid inferior oil to prevent noise or malfunctions. Choose certified brands like Castrol to ensure quality. Simple oil changes can extend the vehicle's lifespan.

[StHenry]

From an economic perspective, using 5W-30 semi-synthetic oil for the Changan CS55 is sufficient, balancing cost and protection. The owner's manual permits this option, helping to save expenses. Semi-synthetic oil lasts longer than mineral oil, requiring changes every 7,500 km, which reduces frequent maintenance costs. Opt for reputable domestic brands like Total or Kunlun, which are reliable and produced with environmental considerations. This choice is practical for daily driving, avoiding resource waste while lowering long-term repair costs. Remember to replace the oil filter to enhance efficiency—overall, it's a cost-effective and practical approach.