What kind of oil should a naturally aspirated engine use?
2 Answers
For ordinary household cars with naturally aspirated engines, engine oils such as 5w20, 0w20, 5w30, and 0w30 are generally suitable. Naturally aspirated engines do not have very high requirements for engine oil, whereas turbocharged engines have relatively higher requirements and need to use higher viscosity engine oils. Additional information: 1. Engine oil is something every car owner will come into contact with during vehicle use. Engine oil is referred to as the lifeblood of the engine. Without engine oil, the engine cannot operate normally. Inside the engine, oil not only lubricates but also cleans, seals, buffers, prevents rust, and dissipates heat. 2. When the engine is running, the oil forms a thin film on the surface of various components inside the engine, preventing direct contact and friction between them. If components directly contact and cause friction, it will accelerate engine wear and may also lead to the instant generation of large amounts of heat within the engine, which can be fatal to the engine. Over time, all performance aspects of engine oil will degrade, so it is necessary to change the engine oil regularly.
I've driven naturally aspirated cars for many years, and based on my experience, viscosity grade matters. The mainstream choices are 5W-30 or 5W-40 synthetic oils. Fully synthetic oils offer better wear resistance and smoother starts, especially protecting the engine in cold weather or during long-distance driving. I always opt for major brands like Mobil or Shell, avoiding cheap mineral oils to prevent excessive carbon buildup inside. Change the oil every 5,000 km and check the oil level to ensure it's not too low. Key points: temperature affects oil selection—in southern summers, a slightly thicker viscosity is acceptable, but don't exceed 0W-20 to avoid higher fuel consumption; new and old cars have slightly different requirements, as noted in the manual—follow it to save money and stay safe.
