What are the general functions of engine oil?
2 Answers
Engine oil filter is the abbreviation of engine oil filter, and its main functions are as follows: 1. Filter the engine oil inside the engine to improve its cleanliness and lubricity. 2. Supply clean engine oil to the crankshaft, connecting rod, camshaft, turbocharger, piston ring, etc., to provide lubrication, cooling, and cleaning effects, thereby reducing engine wear, enabling it to perform at its best, and extending the lifespan of these components. The following is related content introduction: Experts recommend replacing the oil filter every time the engine oil is changed. The reason is that the contaminants in the old oil filter can reduce the viscosity and cleanliness of the new engine oil, affect the oil circulation speed, and also damage the engine.
I remember when I first started driving, I didn’t really understand the role of engine oil. Later, I learned that its primary function is lubrication—it reduces friction between all the moving parts inside the engine, like pistons and crankshafts. Without oil, these parts would wear out quickly from rubbing against each other, or even seize up. Poor lubrication can lead to complete engine failure. Another critical role is cooling: as the oil circulates, it carries away excess heat, preventing the engine from overheating and malfunctioning. This became especially noticeable during my summer road trips—the car ran much more smoothly. The oil also cleans by trapping and removing deposits like carbon buildup and dust, keeping the internals clean. Its sealing function is vital too, helping piston rings seal tightly against cylinder walls to minimize gas leakage. Lastly, it prevents rust and corrosion, which is crucial for cars that sit unused for long periods. In short, engine oil is like a silent caretaker, protecting the heart of your car. Regularly checking and changing the oil, and using the right type, is key to extending engine life. Neglecting this can multiply repair costs several times over.
