What kind of engine oil is generally used for small cars?
3 Answers
Small cars generally use fully synthetic engine oil. Main characteristics of engine oil: Engine oils on the market can be simply divided into two types based on their base oil: mineral oil and synthetic oil (vegetable oil is not considered due to its scarce production). Synthetic oils are further divided into: fully synthetic and semi-synthetic. Lubricant base oils are mainly categorized into mineral base oils and synthetic base oils. Mineral base oils are widely used and consumed in large quantities, but some applications require products blended with synthetic base oils. Engine oil classification standards: 10W-40 is its SAE standard viscosity value. This viscosity value first indicates that the oil is a multi-grade oil. W stands for WINTER, and the number before W represents the oil's flow performance at low temperatures; the smaller the number, the better the starting performance at low temperatures. The number after W represents the oil's stability at high temperatures (i.e., the likelihood of thinning); the larger the number, the better the oil's stability at high temperatures.
I've been driving for almost ten years and found that choosing engine oil depends on the vehicle condition and environment. Small cars generally use 5W-30 or 10W-40 viscosity oil, mostly selected according to the owner's manual. Full synthetic oil offers better protection and longer lifespan, while mineral oil is cheaper but only suitable for basic use. In cold regions, use low W numbers like 0W to prevent hard starts in low temperatures; in hot areas, choose higher numbers like 40 to prevent excessive wear. Don't just look at the price—fake engine oil can cause serious harm, so it's recommended to buy from major brands. The replacement interval is every 5,000 to 10,000 kilometers, depending on the oil type and driving habits. For frequent short trips, the oil gets dirty faster and needs earlier replacement. Don't slack off on checking the dipstick—top up if the oil level is low. Remember, good engine oil protects your engine and saves money in the long run.
I'm a high-speed driving enthusiast, and engine oil is crucial for car performance. Generally, I use full synthetic oils like 5W-40 to enhance lubrication, reduce engine friction loss, and achieve faster acceleration response. Don't just choose any viscosity; the manufacturer's recommendation of 5W-30 is standard, but for track driving, you can opt for 20 or 40 for more stability. Synthetic oil withstands high temperatures without oxidizing, making long-distance driving more reassuring. Don't exceed the 8,000 km change interval, or efficiency will drop. It's pricier than conventional oil but worth it to prevent overheating issues. Consider your driving mode—city traffic often calls for fuel-efficient oils with better temperature control. A quick check of the API rating shows SP class is the best. Don't overlook the needs of older cars; high-mileage oils can prevent leaks. A good choice reduces maintenance hassles.
