Gathering the history of this truck from this thread (flipped) I don't think it will happen again.
Probably had a puddle of oil/fuel in the intercooler that is no longer there.
What causes diesel runaway is the engine is getting more fuel than was intended from a different source other than the injectors.
Usual source is a tired engine making too much blowby and filling the intake with crankcase gasses/oil/etc. The diesel engine will run on whatever fuel it is fed.
When that happens, they will go crazy because the engine speed on a diesel is directly controlled by how much fuel it is fed. No control over fuel volume = diesel runaway.
Imagine the same thing happening on a 14 liter semi truck engine. Get out and run!
I have had customers come in with thier old tired out VW Rabbits stating that they were going along the freeway at 70 mph without even touching the throttle.
Another story runs like this: My employee was exiting a local store and he hears a VW redlining in the parking lot so he goes over to investigate/help.
He pops the hood and tries to stop the screaming engine by corking the air intake for the air filter housing. All that did was turn the whole plastic assembly inside out. Engine didn't stop for a while, but finally did, like yours did.

 

That makes sense, the truck was upside down for about one and a half hours till the wrecker got there. Many thanks.

 

We had a 4 cyclinder detroit(IIRC) try to runaway on a knuckleboom loader back during the winter. Luckily got the cap off the air cleaner and I stuffed my carhartt jacket over it. You talk about some people running around like some chickens with their heads cut off! That was the first experiences I had ever had with a run-away. I didnt think that little 4-banger could rev that high for that long and stay together.

 

I can understand, I jumped out of the truck and got clear and waited for it to fly into pieces.

 

That was to happen to me I'd probably be wishing I was wearing Depends.

 

Mike, I would have too but we were kinda in a pinch and really needed the loader. Thing been running like a champ ever since, well bout as well as can be expected from a old detroit that has had more ether shot to it than a crack house! Ha Ha!

 

Want one even worse, I remember an old Detroit running away backwards smoke pouring out the intake, running on the oil in the crankcase.The only way to stop it was set the brakes put it in gear and pop the clutch.

 

Dave, we wouldve really been up a creek if something like that would have happened with that one. Aint no way to stop that one when all your turning is a hydraulic pump. The whole loader would probably bring better junk price than anything, but it still gets the job done.