Will engine oil normally decrease?

[DiVivian]

Under normal circumstances, engine oil will decrease. Engine lubrication primarily involves pressure lubrication and splash lubrication. During operation, factors such as pressure changes, high temperatures, and heat dissipation can cause oil volatilization and additive depletion, leading to a gradual reduction in oil volume, though the amount is minimal. Below are specific methods for selecting engine oil for vehicles: 1. Performance selection: If you prioritize long-lasting oil performance, Mobil oil is a good choice; if you focus on engine cleanliness, Shell lubricants can be used; for lubricants with strong oil film toughness, Castrol is recommended. 2. 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. 3. 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 full synthetic oil.