이거 그냥 엔진 소리 조용해지고 연비 좋아지는데 왜 안 하세요? (몰라도 너무 몰라요)

hello? This is Jisan Jeon Jang-young. As a professional auto mechanic for 37 years, I have been working hard and improving my skills. We deliver the right wisdom and knowledge to drivers with content related to automobile maintenance. You are making your dream of becoming a YouTube creator come true. If the video was useful, please "Subscribe" and "Like" it. thank you so much. 📌 Jisan Car Center Channel Link:    / @지산카센터   📌 Jisan Car Center : [email protected] If you spend the money well, the car is absolutely awesome. #How to improve car fuel efficiency #Improve car output #Fuel-efficient car #How to reduce engine noise #Car care tips