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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?

Asked on 24 July 2018 by Harrovian

Answered by Keith Moody
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.