oiliness additive

例句：

1. 1. The oiliness additive in the engine oil helps to reduce friction and improve performance.
   发动机油中的油滑添加剂有助于减少摩擦并提高性能。
2. 2. The lubricant added to the machine's moving parts helps to keep them from wearing out too quickly.
   添加到机器移动部件的润滑油有助于保持它们不会过早磨损。
3. 3. The slip additive in the paint helps to make it easier to apply and smoother to the surface.
   油漆中的滑剂有助于使油漆更容易涂抹并且表面更平滑。