Mine was leaking at around 80,000. Took it to the dealer and they replaced the whole pump under warranty. This was less than a year after they replaced all my injectors at about 70,000. I can't believe there hasn't been a recall like GM had for their injector problems on the early Duramax. Everyone I know from my area that has a 3rd gen Cummins has had their injectors and/or CP3 replaced.