What are the symptoms after replacing with counterfeit engine oil?

[SanRachel]

Symptoms after replacing with counterfeit engine oil include: 1. Excessive engine temperature; 2. Inability to clean the engine; 3. Rapid oil consumption; 4. Increased wear between pistons and cylinders; 5. Spark plug carbon deposits; 6. Loud engine noise; 7. Engine vibration. The method for replacing engine oil is: 1. Lift the vehicle with a jack, locate and loosen the oil drain bolt to drain the oil; 2. Remove the oil filter and place a container underneath it; 3. Install a new oil filter and add new engine oil. The functions of engine oil are: 1. Reducing friction and high temperatures; 2. Cooling and lowering temperature; 3. Cleaning and purifying; 4. Shock absorption and buffering; 5. Rust and corrosion prevention.

[MaciRose]

Last time I used fake engine oil, my car started acting strangely with sudden loud noises and a buzzing sound. It felt particularly sluggish during acceleration, as if the throttle had no power. Fuel consumption also increased from the previous 8 liters per 100 kilometers to nearly 11 liters. The temperature warning light on the dashboard came on—short trips were okay, but after half an hour, the temperature gauge would skyrocket. After parking, the engine hood was scalding hot, and there was a strange odor. Upon inspection, the engine oil appeared black and murky, unlike the clear appearance of genuine oil. This counterfeit oil has more impurities and poor lubricity, increasing friction between engine components, which can lead to internal wear over time. I need to switch back to genuine oil and clean the oil system immediately; otherwise, delaying it will only result in higher repair costs.

[McAmelia]

A few years ago, I accidentally used counterfeit engine oil, which caused a series of problems with my car: severe engine shaking after startup, noticeable steering wheel vibrations at idle, and a significant drop in power while driving. Hills that were once easy to climb now required heavy throttle input. The oil pressure warning light would occasionally flicker, and an oil check revealed thin and murky oil quality. The fake oil lacked the protective additives found in genuine products, causing it to fail at slightly higher temperatures and accelerating wear on components like piston rings. Later, the car had to be towed for repairs, costing over a thousand dollars to clean the oil system. Since then, I've learned to only purchase from authorized channels, verify anti-counterfeit codes on packaging, and never compromise quality for cheap deals.

[JoyFitz]

Symptoms appear quickly after using fake engine oil: The first noticeable sign is increased engine noise, with a gurgling sound, especially at high speeds resembling a tractor. After a week, the problems become more pronounced, with insufficient power output, sluggish acceleration like an ox cart, and a sharp increase in fuel consumption. Black smoke emissions rise, and the engine temperature often runs high. I must act immediately—fake oil provides poor lubrication, easily causing engine overheating and damage. Stopping the car and checking the oil quality or replacing it with genuine oil as soon as possible is the right solution. Genuine oil contains antioxidants, while fake oil accelerates mechanical wear and aging.