eli5: How do car engines last so long?

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A car engine basically has thousands of mini explosions happening inside of it, is has parts moving very fast and generating tons of heat, and experiences extreme temperature fluctuations on a daily basis. Yet it is the part that usually dies last in a car.

How do they make them last so long and why are we unable to make other parts of the car as long lasting, such as tires and brakes?

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21 Answers

Anonymous 0 Comments

The reason why engines can outlast tires and brakes many times over is simple. Almost everything in an engine is lubricated to reduce friction. Brakes and tires require friction to keep you in control and help you stop.

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