pour oil on troubled waters

add oil

Synonym of let's go: a cheer of encouragement, support, etc.

bridge over troubled waters

Someone or something that provides support, comfort, and a means to overcome difficult times.

burn the midnight oil

To work studiously, especially late into the night.

cast one's bread upon the waters

To perform a kind deed or favor without the motivation of any immediate reward or benefit to oneself, though with the possibility of eventual future return.

fish in troubled waters

To try to take advantage of a confused or troubled situation.

muddy the waters

To make something unclear and difficult to understand.

oil and water

Two things which are incapable of mixing or coexisting harmoniously with each other.

oil burner

A device whose operation causes apparent combustion of lubricating oil.