For an example, in a hybrid car, a radiator works to cool the combustion engine while a second radiator cools the power electronic system that runs the electric motor.

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The instructions say to pour the additive in your engine, or in your radiator.

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The Finn was running third but a leaking radiator caused a blown engine after Saturday's last stage and he was unable to start Sunday's action.

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The system is like a clever version of a car radiator, but in reverse, keeping the air rushing into the engine hot on the inside, and cool on the outside.

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