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Contaminated fuel and water in the tank
Not every fuel problem is a misfuel. Water in the tank after flooding, a contaminated forecourt delivery, oil poured into the wrong filler or the wrong additive all need the same thing: the tank emptied and the system cleaned.
Do this now
- 1Don't start the engineDon't turn the ignition on either. Keyless? Keep the fob away from the car.
- 2Neutral and push clearAsk staff to help push the car away from the pump.
- 3Tell the cashierThey deal with misfuels every week.
- 4Call Mr FuelFixed price and arrival time on the phone.
On a motorway? Get behind the barrier first. In danger, call 999.
We drain the tank, take a sample for your records, flush the system and refuel with fresh fuel. If the forecourt is at fault, our report and the sample help you claim from them.
Signs you need us
- Several cars broke down after filling at the same station
- Water got in through the filler or after a flood
- Engine oil, screenwash or additive went in the fuel filler
- Water-in-fuel warning light on a diesel
How we fix it
- 1AssessWe ask what went in, when, and how the car's behaving.
- 2Drain and sampleTank emptied; a sealed sample kept for your claim if the forecourt is responsible.
- 3Flush and filterSystem flushed; water separator and filter checked or replaced.
- 4Refuel and testFresh fuel in, engine run and checked.
Good to know
- Water causes corrosion and can stop a diesel's pump; don't keep driving on a water-in-fuel warning.
FAQs
Contaminated fuel and water in the tank: questions
The petrol station sold me bad fuel. Who pays?+
If a forecourt supplied contaminated fuel, they're usually liable. Keep your fuel receipt; our report and a sealed sample support your claim.
I put engine oil in the fuel tank.+
Don't start it. A small amount in a diesel is less critical than in a petrol car, but either way the tank should be drained.
Related
Other problems we fix
Contaminated fuel help near you
Wrong fuel? Don't start the engine.
Call now for a fixed price and a real arrival time. 24 hours a day, 7 days a week, 365 days a year.