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Does friction help to increase gas mileage?

No, friction does not help increase gas mileage; it actually decreases it. Friction is the resistance that opposes the motion of an object when it is in contact with another object. In the case of a car, friction occurs between the tires and the road, and between the engine's moving parts. This friction generates heat and consumes energy, which reduces the car's fuel efficiency. To improve gas mileage, it is important to reduce friction by using efficient lubricants, maintaining proper tire pressure, and avoiding unnecessary drag.