Which engine oil is best for Changan CS55?
2 Answers
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.
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.
