@chkfile 연료 절감 있다고 봅니다(엔진의 부화를 줄여주니 그리고 rpm도 내려 갑니다)

Default Widget

This is Sidebar 1. You can edit the content that appears here by visiting your Widgets panel and modifying the current widgets in Sidebar 1. Or, if you want to be a true ninja, you can add your own content to this sidebar by using the appropriate hooks.