idk my friends pontiac was leaking about 4 quarts a day right when he stopped driving it. still started and drove. but mannnnnnn 4 quarts a day gets expensive. ended up being a O ring.

 

My jeep is a big oil leaker (4.2 - 258 inline 6). Although they say if there is not oil leaking down the side of the motor then don't drive it, it is empty. Gotta love that AMC oil guage. Funny that they made such a great torque motor, but couldn't stop it from leaking.