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What is the Purpose of the Heat Exchanger in a Car?

Model: (Various brands) Various
Part: Checks and maintenance

In our vehicle, we have a plate heat exchanger. It dissipates heat in the hottest parts of the engine; indeed, on one side, engine oil passes through, and on the other side, water flows to the radiator where it disperses the heat. This way, the oil cools down, does not burn, and prevents the engine from seizing. This component is mainly fitted on turbo-diesel engines due to their high compression ratios, or on highly tuned turbo petrol engines. Additionally, in winter, it helps bring the engine oil up to temperature, as the water heats up before the oil. If it fails, water and oil mix, leading to the risk of thinking the head gasket has blown.

Updated on 6 August 2026 by ScegliAuto

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How to Open the Bonnet on the Lancia Y

To open the bonnet on this vehicle, follow these simple instructions: first, open the driver's door and locate the lever positioned just below the dashboard, marked with an image of the vehicle with the bonnet open. Pull this lever towards you until you hear a "click" indicating the bonnet is released. Next, exit the cabin and stand in front of the bonnet to disengage the safety catch and complete the opening. To do this, slightly lift the bonnet, locate the yellow lever underneath, and pull it to the left to fully release and open the bonnet.

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