My 4.9L northstar leaks oil bad. I tried looking for the leak but there is just oil everywhere. So I figured I would start with the more comon gaskets and work my way from there untill there all changed. I would like to pull the motor and rebuild it but I can't have it off the road for long.
what are the Common oil leaks? on 2002 Cadillac Seville SLS
by DrSmilzel in Holbrook, MA on February 27, 2013
ANSWER by rpclements on February 27, 2013
If it's leaking alot of oil daily it's probably your rear main seal.
what are some common oil leaks with this model... It is using oil but is not leaving anything on the ground.