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Petrol In A Diesel

hi8prt

By hi8prt,
in BMW 3 Series Forum

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hi8prt Apprentice

hi8prt

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ok i know what a plonker but on a serious note just went and put 7 litres of unleaded in the wifes 2002 320td compact before i realised my mistake topped the rest up with 56 litres of diesel drove steady home all seems ok but intend to keep topping up at say evey hundred miles should i be ok ????? have seen it somewhere that i should add some oil ????? to the fuel tank and if so whhat oil???? hope you can help cheers Phil

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Guest DazH

Guest DazH

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Petrol and Diesel are injected at different times during the strokes. Swapping the fuels will cause premature ignition

Diesel is introduced during compression where as petrol is introduced before (on the down stroke).

Diesel is worse in a petrol engine as the spark alone isn't enough to completely burn the fuel so you get nasty smoking from the back. Can also damage the cat which is never good eh?

Petrol in a diesel engine isn't the worse thing in the world as it will still ignite under the high pressure but in large dosage/percentage causes the engine to run rough as the engine isn't designed to handle such a 'wollop'

as Dabsy said, will probably give the old oil-squirting injectors a good clean :D

Hope this helps

Daz

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Guest DazH

Guest DazH

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Wont do any harm at all!

+1 I second that. Realistically, you will be fine. When you break it down to raw engineering, Fuel is Fuel. Just like how Oil is Oil. At the end of the day, you can run your Diesel lump on used chippy oil lol

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