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Matt, Mechanical Engineer
Category: Mercedes
Satisfied Customers: 22736
Experience:  BEng hons Mech engineering, in auto industry 22 years
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I have just put 8 litres of unleaded petrol in my 2014 E250

Customer Question

I have just put 8 litres of unleaded petrol in my 2014 E250 cdi, to a tank full of diesel can you please advise what to do Terry
Submitted: 2 years ago.
Category: Mercedes
Expert:  Matt replied 2 years ago.
Hello Terry

the tank capacity on these cars is 59 litres and you can typically withstand 15% petrol in diesel with no issues

so for a 59 litre tank 15% would be 8.85 ltrs

so you should just be alright

providing that the tank is brimmed with diesel afterwards

I'd also reccommend adding some diesel pump treatment to the tank to help with pump lubrication as the petrol attacks the pump and injector seals

something like this
Expert:  Matt replied 2 years ago.

do you still need help?