Any thoughts on whether an imprinted sticker may improve fuel efficiency if placed on the fuel line of a car? If so what would you advise to imprint to the sticker?
자동차 연료 라인에 인쇄된 스티커를 붙이면 연비가 향상될 수 있을까요? 만약 그렇다면 스티커에 어떤 내용을 인쇄하는 것이 좋을까요?
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