My 06 has started leaking oil (not bad) @ front of pan and just under front pully. Would that be covered under cummins 100000 mile waranty?

 

Yep.. Then again, with the mods you have it maybe a good excuse for the dealer to say no

 

I too had a leak recently (actually a slow drip) on the front end of my engine, so and I took it into the local Dodge dealership in my new home town. They couldn't tell for sure where it was coming from so they added dye and had me drive it for a couple of days. The dye method worked and they found out that the gasket between the block and rear timing gear cover had deteriorated. A day later it was repaired under the Cummins warranty and didn't cost me a cent.

Good luck and let's hope it's covered!

 

Mine was replaced at 98,000 miles under Cummins warrantee.