I have used BP ultimate from day 1 ,with no probs, but when i went on the Cornwall meet i had to use normal unleaded from Morrisons e.t.c. (cheap stuff) as there were no BP garages at hand. After a few miles my

started 'pinking' and coughing terrible, and it was
really hot.As soon as i filled up with the good stuff after getting home, it's been fine. What have you been using? if it's been good fuel, there is definately something wrong and i would take the advice from Mase and bigboy benji, and have another Ford dealer look at it, and explaining that you have heard of the same problem from other

owners.
One other thought. When it happened did you have the air con on

because this does have a big power drain. This along with fuel and weather conditions may be the answer.
