The lubricating oil reduced friction between the gears during operation.

She lubricated the bicycle chain before the long ride to prevent squeaking.

Make sure the gears are lubricated before starting the machine.

The technician applied a lubricational coating to the gears before reassembling the engine.

The technician lubricates the gears before the machine starts.

The engineers tested various lubricants to determine which would best reduce friction in the new turbine.

The engineer recommended a lubricative coating to reduce friction between the moving parts.

The engineer noted that the lubricities of the different coatings affected the machine's performance.

Regular lubrications of the machine's moving parts prevented costly breakdowns.

The maintenance crew ordered several flange lubricators to prevent leakage and reduce wear on the pipeline joints.