Thats called Built tough right there. Those 300 straight sixes don't die without a long hard fight that's for sure.
I saw a Ford Bronco at the shop, during the Cash For Clunkers (damn waste if you ask me), they put double the amount of chemical in it, and even though this truck was beat to hell with a handbasket, it was running crisp, they ran the chemical through it a few times and found out it was "burning" it. They pulled the engine, put in a blown one from a junker they had sitting outside and called it dead. I had to pull it apart for them to part it out though, leave me with all the hard work, those a-holes.....
But at any rate, watching that truck run for that long and hearing that it was "burning" what they called "engine killer" (we always called it this, I never heard what they put in the engines, probably something simple though), into a Bronco engine, and seeing it run like the first day off the assembly line kinda made me feel good inside, because I have always felt that even though vehicles are innanimate objects, every single one is different in some way shape or form, they all run similar, but not the same, some can break due to a defect, others wont, etc, the parts that make up an engine are alive. (p.s. it was a 1978 Ford Bronco with a custom Orange body, black cage, and a white soft-top, but was rusted to hell, it was a used farm truck).
Then again, me being a vehicle nut spreads back to me collecting toy cars =P I have a lot....