"MartinC" wrote in message
om...
Can I expect any bad effects from adding (accidentally) approx 10% (6
litres in 60) unleaded petrol to a diesel engine car. The car appears
to run OK at present. Will the two fuels have mixed.

Please keep (deserved) abuse to a minimum and answers to a maximum!

You should be fine. One of our diesel lease Focus's at work keeps getting
petrol in it. According to Ford it can run at about 30% petrol. However
keep topping up with diesel (ie. it dilute the mixture) and you should be
fine.