diesel engine oil additive

例句：

1. 1. The additionof this additive can significantly improve the performance of the diesel engine.
   这种添加剂的添加可以显著提高柴油发动机的性能。
2. 2.The manufacturer claims that the additive helps to reduce emissions and increase fuel efficiency.
   制造商声称，这种添加剂有助于减少排放和提高燃油效率。
3. 3. In order to maintain the longevity of the engine, it is important to regularly add this diesel engine oil additive.
   为了保持发动机的寿命，定期添加这种柴油发动机油添加剂是很重要的。