Undo the oil drain plug on the oil container and drain off the oil.
拧下机油箱上的放油塞，并排放机油。
Have you heard of oil cap or drain plug not tightened?
你曾听说过机油盖或泄油螺丝没栓紧的事吗？
Keep a check on it, and put the drain plug back on when the oil has finished draining.
继续检查，并把排水管堵塞时，回到石油已完成排水。
Keep a check on it, and put the drain plug back on when the oil has finished draining.
继续检查，并把排水管堵塞时，回到石油已完成排水。
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