As you may know, the modern-day engine relies on lubrication in order to cut down on friction and keep the operating temperature of the engine in check. While the oil itself is carefully engineered to cope with extreme conditions without degradation, it may need some additional help to cope with modern-day demands. To provide this type of assistance, engineers will often fit an oil cooler to the front of the vehicle and while this used to be a component only found in high-performance cars, it may now be standard equipment on your car. How can you be sure that this part is working properly and what will happen if it isn't?
What's the Purpose of the Oil Cooler?
In simple terms, the oil cooler receives warm engine oil and reduces the temperature before returning it to the storage sump on the bottom of the motor. The cooler looks a bit like a conventional radiator and the oil flows through the fins across its width. As it does so, coolant is simultaneously pumped through separate tubes adjacent to the oil conduits and this helps to absorb the heat from the oil and evacuate it to the surrounding air.
When Things Go Wrong
All is well until some of the internal seals, gaskets or rubber connectors begin to wear down or perish. When this happens the two liquids can combine, and this will lead to significant problems if you're not careful.
Oil Contamination
To begin with, oil may enter the cooling system, which will compromise its ability to protect the engine and will eventually lead to a lack of lubrication. If one of the seals is faulty then the engine oil will force its way into the cooling system, because it is more highly pressurised than the coolant.
Coolant Contamination
Conversely, coolant may run into the oil system when the engine is switched off, as in this case the cooling system will be more highly pressurised. This liquid will find its way into the oil sump and as it rises may interfere with the crankshaft operation when the vehicle is subsequently started.
Leaking Oil
Sometimes you may notice evidence of engine oil underneath and towards the front of your car. This could be a sign that the cooler is leaking and if not fixed, could result in premature failure due to increased engine temperature.
Taking Action
If you notice any of these symptoms, it's time to take action. You may have to change the oil cooler adapter and all connectors, while you may also have to flush out the cooling system, the oil cooler and the engine to get rid of any contamination. Always make sure that you get top quality replacement parts from a place that offers adequate parts, such as Fiat spare parts and others, so that you can avoid this type of problem in the future.
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