What kind of engine oil is best for a 10-year-old car?

[LeviLee]

For a 10-year-old car, the sealing performance of the engine lubrication system is relatively poor. Fully synthetic oil, with its low viscosity and good fluidity, can easily lead to oil leakage. High-viscosity semi-synthetic oil or mineral oil is more suitable for engines with higher mileage. The specific methods for choosing engine oil are as follows: Performance selection: If you prioritize long-lasting oil performance, Mobil oil is a good choice; if you focus on the cleaning effect of the oil on the engine, Shell lubricants can be used; for lubricants requiring strong oil film toughness, Castrol is recommended. Driving conditions: For frequent driving in congested areas, older vehicles, or long-distance heavy-load transportation, the viscosity of the lubricant can be appropriately increased. Engine type: For naturally aspirated engines, mineral oil and semi-synthetic oil can be used. Compared to naturally aspirated engines, turbocharged engines have a more compact structure and operate under harsher conditions, requiring higher-grade lubricants with better fluidity, preferably fully synthetic oil.