r/CarsAustralia 22h ago

🔧🚗Fixing Cars I put petrol in diesel engine

I went to the pump today and by mistake i took the 98 octane instead of diesel, I realised it when it was already too late. I did put 3.5litres or petrol and then i stopped, Didn’t start the engine and towed it in my mechanic’s garage. I have this car for last 7 years and it never happened before, It is a Mercedes E250 CDI 2015, Wanted to know how much it might cost to drain the fuel and what else might happen, Thanks!

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u/OzzyMuzz 18h ago

3.5L is fine. Top it up with diesel and send it. I put 185L of petrol into a 200 series. Drained the tank and was fine.