What is life like with your car? Let us know and win £500 in John Lewis vouchers | No thanks
Fixing a misfuelled problem
I was in a hurry to get to the airport and accidentally put 14.8 litres of Shell Fuelsave Petrol in my 2006, 56 model diesel BMW 520d SE Auto. At the advice of an old man who happened to be at the forecourt, I put in 500ml of Shell Helix HX5 15-W-40 engine oil into the tank and brimmed it to the full with Shell Fuelsave diesel and drove to the airport, 50 miles away. On my return, I drove back and when tank became half full, filled up with BP Ultimate diesel and 60 mls of Millers Diesel Ecomax. The car has now run a total of 300 miles since the incident but I am a worried man and have a few questions:
1. Could I have done some lasting damage to the car? Now that I have done 300 miles plus, is damage still possible? Car seems to be running fine.
2. I have so far done only 45k miles in this car. Is it prudent to keep it for the long term?
3. If I am topping up with BP Ultimate do I need to put in Millers Diesel Ecomax as it already has a high cetane rating?
4. Is Millers Ecomax a good lubricant? Should I be using something else?
5. Should I be doing something else?
1. Could I have done some lasting damage to the car? Now that I have done 300 miles plus, is damage still possible? Car seems to be running fine.
2. I have so far done only 45k miles in this car. Is it prudent to keep it for the long term?
3. If I am topping up with BP Ultimate do I need to put in Millers Diesel Ecomax as it already has a high cetane rating?
4. Is Millers Ecomax a good lubricant? Should I be using something else?
5. Should I be doing something else?
Asked on 20 September 2012 by trinity4006
Answered by
Honest John
The petrol will sit on top of the diesel. If you remove the filler cap and sniff you will be able to smell it.
It will take around 3,000 miles to fully disperse into the fuel.
I'd have the tank drained, then carry on using lubricity additives or high lubricity diesel. Shell V-Power diesel is by far the best for this purpose.
I got away with 9.3 litres. But 14.8 is a lot more than that.
It will take around 3,000 miles to fully disperse into the fuel.
I'd have the tank drained, then carry on using lubricity additives or high lubricity diesel. Shell V-Power diesel is by far the best for this purpose.
I got away with 9.3 litres. But 14.8 is a lot more than that.
Looking for a garage you can trust? Honest John's Good Garage Guide has thousands of reader recommended garages, plus how-to guides and tips on servicing.
The Good Garage GuideSimilar questions
I put 25 litres of petrol on top of two gallons of diesel in my wife's diesel engined car, then drove five miles before the engine juddered and I realised my mistake.
Pulled up immediately and called...
My wife's Freelander is nearly 3-years-old and we have recently noticed a whistling noise which our local Land Rover dealer has diagnosed as a bearing in the turbo.
Land Rover have refused to repair...
I put in 26 litres of petrol in my 2.7 S type diesel Jaguar. Having realised this I then filled up to the tanks capacity (about 66 litres)with diesel. The car appears to be going o.k. Do I have a problem...
Related models
Brilliant ride and handling, powerful and efficient diesel engines, upmarket interior, very safe, lots on the used market.
.jpg)
