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I accidentally put seven litres of petrol in my diesel Rover 75 - will I get away with it?

I stupidly started to fill my Rover 75 diesel with petrol. I realised after about seven litres and stopped with the tank just above a quarter full. I filled up the rest with diesel and drove the six miles home. The tank is 65 litres capacity, so my question is what should I do? Should I have it drained or will I get away with it due to the relatively small quantity?

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Don't feel stupid. Motoring organisations reckon misfuelling happens every three minutes with up to 150,000 cases a year. You can usually get away with up to 10 litres of petrol in a 60-litre tank, so you should be okay. But you should fill up with high-lubricity premium diesel and keep doing exactly that. Don't allow the tank to be more than half-empty for about 2000 miles. At first, the petrol will float on top of the diesel and won't get sucked into the low-level fuel pick-up before dispersing into the diesel fuel.
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A fine looking car from all angles, until the 2004 facelift. Destined to become a 'classic'. 2.0 diesels proving to be good long life cars with excellent clubs and spares back-up. Up to 4 stars.

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