What Impact Does a Faulty Oil Cooler Have on the Engine?
2 Answers
The impact of a damaged oil cooler on the engine is as follows: 1. Engine oil mixing with water: The internal engine oil pipeline of the cooler is connected to the coolant pipeline, leading to water entering the engine oil, causing emulsification of the engine oil, and subsequently damaging the engine. 2. Oil leakage issues: Other common faults include blockage of the engine oil passage, leakage at the engine oil passage interface, blockage of the coolant pipeline, and leakage at the coolant pipeline interface. The functions of the engine oil cooler are as follows: 1. Cooling effect: If the engine oil temperature exceeds the normal value, it will cause the engine oil to become too thin, reducing the lubrication effect. Therefore, when the engine is hot, the coolant flowing through the engine oil heat exchanger is responsible for absorbing the heat from the engine oil, maintaining the average temperature of the engine oil in the lubrication system not exceeding the upper limit (generally 90°C). 2. Heating effect: During cold starts, the engine oil temperature is low and its fluidity is poor, which increases the rotational resistance of various engine components. Therefore, it is necessary to raise the engine oil temperature as quickly as possible. As the engine runs, the temperature gradually increases, and the coolant also heats up accordingly. At this time, the coolant, which is at a higher temperature than the engine oil, will heat the engine oil at the engine oil heat exchanger.
I'm passionate about car modifications, and if the oil cooler fails, it directly affects the engine's oil temperature control. Overheating oil becomes thinner, significantly reducing lubrication effectiveness and accelerating engine component wear. You'll notice weaker power and increased noise while driving. Ignoring the issue can lead to more carbon buildup, higher fuel consumption, and even severe failures like piston ring seizure or cylinder scoring. I recommend checking the cooler for leaks or blockages immediately if you notice abnormal oil temperature rises or the engine overheating warning light comes on. Regular cleaning of the cooling fins during maintenance can prevent problems. Proper oil temperature management is crucial for engine longevity, and I often share these tips on forums to help others avoid common pitfalls.
