How Much Engine Oil Does a Car Generally Need?

[PatrickDella]

In most cases, family sedans require approximately 4L of engine oil per oil change. The functions of engine oil: In automobiles, engine oil primarily serves the following purposes: lubrication, cleaning, cooling, rust prevention, and sealing. Dry friction between metal components can cause surface damage, hence the need for engine oil's lubricating properties to provide protection. With engine oil's lubrication, metal parts avoid direct contact and instead float on the lubricating oil. This is commonly referred to as the "oil film bearing" effect. Types of cars: Generally, cars can be categorized by class and type. The main classifications include micro cars, subcompact cars, compact cars, midsize cars, executive cars, and luxury cars. Currently, there isn't a strictly standardized classification system; it's primarily based on factors such as the vehicle's engine displacement, wheelbase, and technology used. However, this remains a broad categorization method.