*copious sweary words* Have never done this before, but in a moment of befuddlement I inadvertently put a small amount (2.6 litres) of unleaded fuel into my diesel car this evening. The tank was almost empty at the time. Having realised my mistake, I went on to fill the tank to the brim (50.28 litres) with diesel and hoped to goodness I'd get home (30 miles) wihout mishap. Car seems to be running fine, but I'm worried I've caused it some harm. Please can anyone put my mind at rest? Ta.