油 is one of the most commonly used Japanese kanji, and it also has a lot of special readings in addition to the standard onyomi and kunyomi readings.
ONYOMI 音読み
あぶら abura
KUNYOMI 訓読み
ユ yu ユウ yuu
Examples
私の服は油で汚れていた。My clothes were dirty with oil.水は油よりも重い。Water is heavier than oil.その水は油で汚くなった。The water was fouled by oil.油っぽい食事は嫌いだ。I don’t like a fat diet.油と水は混ざらないんだ。Oil and water don’t mix.彼はたくさんの小麦粉と油を買い込んだ。He bought a lot of flour and oil.彼の袖が油まみれのなべに触れた。His sleeve touched the greasy pan.水と油はまざらない。Oil and water don’t blend.油は水と溶け合わない。Oil and water won’t blend with each other.油は水に浮く性質がある。Oil floats on water.