When drilling metal, keep the area lubricated with lightweight oil.

The stone must be saturated with lightweight oil during use.

Before and during use, the stone must be saturated with lightweight cutting oil or mineral oil.

Squirt a few drops of lightweight oil on the spot and begin drilling.

An oilstone has to be kept saturated with lightweight oil during use.

Lubricate them with a few drops of lightweight oil.

People with fine hair should stick to mists containing lightweight oils.

During use, the stone must be kept saturated with lightweight cutting oil or mineral oil.

Maintenance crews then drain the aircraft's fuel system and pump it full of lightweight oil.

Lubricate moving parts of tools with a few drops of lightweight oil.