What are the symptoms of a faulty oil cooler?
2 Answers
The symptoms of a faulty oil cooler are: 1. Oil leakage; 2. Presence of oil floating in the coolant reservoir; 3. Reduced airflow through the cooling fins; 4. Excessive oil temperature; 5. Insufficient antifreeze in the radiator; 6. Oil degradation leading to engine wear; 7. Blocked or ruptured pipes; 8. Overlapping or deformed cooling fins; 9. Non-functioning fan; 10. Presence of oil in the radiator. The oil cooler, also known as an oil cooler, is a cooling device used in diesel engines. Its function is to absorb heat from the coolant during cold starts to warm up the oil quickly, and to dissipate heat through the coolant when the temperature is too high.
There are several obvious symptoms when the oil cooler fails. The most common is an increase in oil temperature, making the engine prone to overheating, especially after climbing hills or prolonged driving. The oil pressure gauge may show low or unstable readings, and sometimes the oil warning light on the dashboard will illuminate. Another issue is oil leakage or coolant contamination—if you check the coolant reservoir and find the liquid has turned brown or has an oily film, there's definitely a problem. The engine oil may also turn black and degrade quickly, leading to frequent oil changes. If not repaired promptly, the engine will wear out rapidly, and in severe cases, it may even be scrapped. Therefore, once these signs are noticed, don’t delay—take it to a professional shop immediately. Replacing the cooler can prevent greater damage.