automotive gear oil

例句：

1. 1.The car needs new automotive gear oil to keep it running smoothly.
   这辆车需要新的汽车齿轮油来保持其顺畅运行。
2. 2.The mechanic changed the old automotive gear oil with fresh one.
   机械师用新鲜的汽车齿轮油替换了旧的。
3. 3.He poured some automotive gear oil into the engine to lubricate it.
   他往发动机里倒了一些汽车齿轮油以润滑它。