Re: gas in a diesel engine
The engine should be fine. You're better off not using the tank you filled with gas (obviously), and to replace it with a new unit as the pump is likely integrated into the tank in which case it would be less expensive to replace it all, instead of removing it, and having it cleaned. It'll also give you better piece of mind.
Running gas for a prolonged period in a diesel, the engine will more than likely stall out after a while as you can't compress gasoline, as it's meant for spark ignition only. The diesel is rather robust, but gasoline can degrade hoses, injectors and other seals.
'11 Ram Quad Cab 4x4 SXT 5.7L HEMI (stock); 48,500m
'06 Pontiac G6 GT 3.5L 220hp; 64,000m
'12 Chrysler 200 Limited 3.6L 283hp; 28,000m
'99 Taurus 3.0L 2V Vulcan 145hp; 154,300m - Traded
Amsoil in all vehicles!