Heavy oil may refer to:
- Fuel oil that contains residual oil left over from distillation.
- Heavy crude oil, viscous crude oil.
- Coal tar creosote, a wood preservative and waterproofing agent.
Famous quotes containing the words heavy and/or oil:
“The Danaan children laugh, in cradles of wrought gold,
And clap their hands together, and half close their eyes,
For they will ride the North when the ger-eagle flies,
With heavy whitening wings, and a heart fallen cold....”
—William Butler Yeats (1865–1939)
“As a rule they will refuse even to sample a foreign dish, they regard such things as garlic and olive oil with disgust, life is unliveable to them unless they have tea and puddings.”
—George Orwell (1903–1950)