Excess blowby

[in2trux]

The truck is home now, intact. The problem is worse, so at this point the truck is off the road.
With 665k on the engine I'm going to assume it's inframe time....

Anyway you look at it, the head will probably have to come off and patching the problem isn't going to help in the long run.

If it is a cracked piston or ring I don't want to stress it with a cutout test.
One way or another I have to find the source of the problem and fix it right.