Hi Ken

My advice would be the same as that given by Ed & Tony, Our normal proceedure is to remove all fuel from car, then put 5-10litres diesel in & purge system ( if possible at fuel return to tank ) then fill with another 10 litres , change fuel filter & put 1 can of forte in . Run for 10 mins & then fill up with diesel .

However this last sunday had a call from local farmer whose daughter had put 14 litres petrol in Golf PD on friday , then realised her mistake & filled up with 38 litres of diesel and drove from london to hereford & then topped up again & all seemed to be good. I warned him of possible impending disaster & he seemed to be ok to take the risk !

When cleaned out as above we have not had a problem even when the cars have been driven - but have heard of many horror stories - so it pays to err on the side of caution I feel.

Regards Pete