1. Decreased Lubrication: As oil ages, it breaks down and loses its lubricating properties. This can lead to increased friction between engine parts, causing premature wear and tear. Reduced lubrication can also lead to engine overheating and decreased fuel efficiency.
2. Sludge and Varnish Buildup: Old oil can oxidize and form sludge, which is a thick, tar-like substance. Sludge can clog oil passages and restrict oil flow, leading to poor lubrication and increased engine wear. Varnish is a sticky substance that can form on engine components, causing them to stick and malfunction.
3. Corrosion: Old oil can become acidic and corrosive, which can damage engine components made of metal, plastic, or rubber. This can lead to leaks, premature failure of parts, and costly repairs.
4. Reduced Cooling Efficiency: Old oil can lose its ability to transfer heat away from engine components effectively. This can lead to engine overheating, which can cause damage to various engine parts, including pistons, cylinder heads, and gaskets.
5. Engine Failure: In severe cases, old motor oil can cause engine failure. Lack of lubrication, sludge buildup, corrosion, and overheating can all contribute to major engine damage and the need for costly repairs or even engine replacement.
To avoid these problems, it's essential to change your car's motor oil according to the manufacturer's recommended intervals or based on your driving conditions. Regular oil changes help maintain the oil's lubricating properties, prevent sludge and varnish buildup, protect against corrosion, and ensure optimal engine performance and longevity.
