Will my crd have any long term problem with the service station filling my tank with gasoline and my wife driving it for 30 miles before realising

You wont know what damage has been done until you drain the fuel tank, drain the fuel pump and try to start it again.

The station should pay for any damage to the vehicle, have the receipt handy.

Good luck.

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2006 Liberty Limited CRD, Deep Beryl Green, Yeti tune, Arp studs, new cams, rockers, lifters, TB. "Green Monster"
2005 Liberty Sport CRD, Deep Beryl Green, GDE Hot Tune, ARP studs. "Rocket"
1982 Fiat 124 Spider Convertible. "Fiona"

The guy at the garage has drained the tank changed the filter and flushed it out . It started ok and has ran with no problems for 200 miles
do you think there would be ongoing problem or am i lucky.

Actually - they designed it with the expectation that people would do that - it can run on a diesel/gas mix - it doesn't run well - but it will run.
change filter / drain tank - and it'll be fine several folks have done it.

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2005 CRD
stuff
Skeptic quod gratis asseritur, gratis negatur

Did the service station pay to have it drained? If you have a pump failure in the near future you know who to blame.

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20 year owner of Libby CRD!
2006 LTD Bright Silver loaded with all the needed mods, CCV intact.
Equipped with HDS thermostat, plenty of heat, faster warm-ups, increased fuel mileage.