| 摘要 |
PROBLEM TO BE SOLVED: To provide a drain bolt for an oil container, which enables efficient and effective use of a modifier and which can be easily and rapidly incorporated into the oil container.SOLUTION: A drain bolt 1 for an oil container includes a storage container 2 for a solid oil modifier, which has an outside diameter dimension enabling passage through a drain bolt hole for discharging oil and in which an oil entrance/exit hole 2d enabling free entrance/exit of the oil is formed. |
