This block was sitting in Peninsular's shop the day we were there. It was removed from a motorhome with more cylinder taper than I've seen in a 6.5. This was due (we were told) to a collapsed air filter, that allowed the engine to ingest dirt for quite some time. Like others I've seen with washed-out cyls, #6 & #8 were the worst, though all eight holes were trashed.

Jim