[Sirrotica]

Gasoline has absolutely no lubrication in it and is really hard on the pump and injectors which are designed to be lubricated by the lubricity in the diesel fuel. Running it on gas, or a partial gas diesel blend will definitely shorten the lifespan on the high pressure side of the fuel system.

If you dodged a bullet now, it will probably ricochet back and at least make a partial hit sooner than later. It's akin to running an engine out of oil, if you catch it in time you might save the engine, but you definitely shortened the lifespan in the end.

The other damage Eric/Mike and others have already mentioned may not be too severe to render the engine useless, but it won't last the same lifespan it would have had the gasoline not been accidentally put in the van.