Why does a car burn engine oil when running at high speed?
1 Answers
Car running at high speed burns engine oil due to a malfunction in the crankcase ventilation system, which causes an increase in oil pressure inside the crankcase during prolonged engine operation. If the engine shakes at idle or the engine oil level drops significantly within a routine maintenance interval (oil change cycle) without any leakage, then the vehicle is experiencing oil burning. The following is an introduction to engine oil: 1. Composition of engine oil: Engine oil is the lubricant used in engines, consisting of base oil and additives. 2. Density and functions of engine oil: The density of engine oil is approximately 0.91×10³ (kg/m³), and it serves to lubricate and reduce friction, assist in cooling, seal and prevent leaks, prevent rust and corrosion, and provide shock absorption and cushioning for the engine.