you never took it to the dealer for the leak when it was under warranty ? mine gets a little bit of wet spot on the side of the block, but never enough to drip in the driveway. i would love to get that kind of mileage, even when it was stock, it was never over 11 empty. it would really bother me if the truck had no power, but since it ran so strong, i never tried to do anything about it.
Why have the dealer screw with the truck. I've read about and continue to read the diesel forums about this engine with all the leak concerns.
I'm used to the Big 3 engines leaking, wether built inhouse or by someone else.
If the engine starts pouring oil out all over the ground, then I'll fix it. Till then, I expect it to stay relatively moist as it has been for many good miles.