Why is there a strong smell of engine oil in the car?

[Gideon]

The reasons for smelling a strong odor of engine oil in the car are: 1. Oil leakage from the valve cover, dripping onto the hot exhaust pipe, with the air conditioning set to external circulation, leading to the smell of engine oil; 2. Engine oil from the oil pan splashing onto the exhaust pipe, it is recommended to stop and inspect; 3. Insufficient coolant causing the engine temperature to be too high. The main functions of engine oil are to reduce friction and wear of moving parts, and to remove sludge and varnish from the engine. It also neutralizes acids produced from fuel and lubricant oxidation, improves the sealing of piston rings, and cools the engine by carrying away heat from moving parts. Engine oil, motor oil, or engine lubricant is a substance enhanced with additives in base oil, mainly containing anti-wear additives, detergents, dispersants, and multi-grade oil viscosity index improvers.