What are the consequences of using the wrong engine oil in a car?
2 Answers
The consequences of using the wrong engine oil in a car are: 1. It can cause chemical reactions, reducing lubrication effectiveness; 2. It can produce acid-base compounds that accelerate corrosion of engine components; 3. It can degrade the sealing performance of piston rods or piston rings, leading to discoloration or damage; 4. The engine is more prone to malfunctions, accelerating sludge buildup in the oil; 5. Abnormal smoke from the exhaust pipe and severe wear of pistons and cylinder liners. Engine oil, also known as motor lubricant, consists of base oil and additives. It serves to lubricate and reduce friction, assist in cooling, seal against leaks, prevent rust and corrosion, and provide cushioning and shock absorption for the engine.
I've seen many cases of using the wrong engine oil, and the consequences can be quite severe. If your car requires low-viscosity synthetic oil but you mistakenly use high-viscosity conventional oil, the engine will suffer from insufficient lubrication, leading to increased friction between metal components. I once encountered a vehicle that developed abnormal noise and oil pump failure due to incorrect oil pressure, ultimately requiring a major engine overhaul. Conversely, oil that's too thin may cause oil film rupture, accelerating piston and ring wear while significantly increasing fuel consumption. Prolonged use can also lead to excessive carbon buildup, failed emissions standards, or even roadside breakdowns. The safest approach is to stop driving immediately and replace the oil with the correct specification as per the manual to prevent greater damage and risks. Don't underestimate this mistake—it can destroy an engine.
