1.   Brake fluid was leaking out from under my car.

2.   An ultrasound exam had shown that nearly all the amniotic fluid had leaked out of her womb.

3.   If the two cylinders do not fit together precisely, hydraulic fluid can leak within the mechanism.

4.   She said it turned out that spinal fluid was leaking beneath the incision.

5.   Whenever little Saul laughed or cried, spinal fluid would leak, forming a bubble over his nose.