Duramax Third Generation: 2006-2007.5 (LBZ & LLY)
I'm looking at a 2007 3500 CC , dually 4X4, 140,000 miles, excellent shape.
Is it just a matter of time before the head gaskets need replaced?
Or is that from higher than stock boost? Or new head gasket design cured that?
It appears totally stock.