Any ideas where to look next? I have a 6.0l diesel 2003. Just changed the ICP, but wasn't the problem. No oil from intake manifold and I don't have white smoke.

 

Start looking at the Oil filter housing and work your way back threw valley

any oil leak in the Valley of engine will run off back of moter

could be a Oil pressure sensor by oil filter or Turbo supply/drain leaking even a HPOP cover leaking

might have to clean it up to see where coming from as there are LOTS of possibilities

 

Ok, well it seems the truck only leaks oil when I tow something. Any ideas? Doesn't leak with normal driving or just sitting, only when driven hard or towing.

 

I had that problem a few weeks ago except it was pouring out when it was started. As it turned out, it was a bad o ring on the aluminum bolt that goes in the top of the HPOP. But like Benny said I had to clean it up to find out exactly where it was coming from. He's also right about there being a lot of places for it to leak. I learned that as well. Is there oil by the filter housing and the front part of the engine valley or mostly near the rear?

 

That's why we call them "6 Leakers".

 

Not good words, seems like a lot people use that term. JMHO

 

Well it seems the oil is only coming from the upper right/back of the motor. I wish I had a place to park the truck where I could take it apart, but I live in a townhouse and the truck is too tall to fit in the garage and I'm not allowed to work on it in the driveway.... anyways, its not my daily driver, I just use it for plowing snow, but I'll have to take it over to a buddy's house and clean it up a bit. From what I could see without taking anything off, the right and left side of the motor are dry as far as I could see (about the 2.5 cylinders back or so). I'll take another look at it today when I go get it to pick up the boat.

 

Only time mine leaked was when I was making oil from bad orings fixed that and its dry as a bone

Some folks simply to much oil in it and cause there own Fate