I have a 2004 3500 4x4 with an oil leak. It appears to be coming from the blow-by/breather hose. I took it to the dealership and lets just say they refused to do anything about it. I had a 2003 and it never had this problem. Come to think of it, neither did my 98 or 98 1/2. One person at the dealership told me the older models had a cannister that collected the blow by and that's why I never saw it before. He said that DC removed the cannister on the newer model trucks. It just seems rediculous that a brand new truck would leak oil on my garage floor.

 

Find another dealer. It shouldn't leak from the blow-by tube.

 

yea they do, it's the blow-by hose it vents vapor! it will drip oil as well. all is good.