Putting unleaded in a diesel engine
If you have just done it, putting unleaded in a diesel engine, the fuel is still in the tank as long as the engine has not run. Petrol strips the lubrication diesel gives the pump and injectors, so it must come out before the engine runs. Ring 01295 380724.
Putting unleaded in a diesel engine: what happens next
The job has four steps after your call: drain the tank, flush the lines, refill with clean fuel, start and check the engine. You agree the price before any of it starts.
Why people search putting unleaded in a diesel engine
If you searched “putting unleaded in a diesel engine”, the fuel is probably still in the tank. Keep it there until it can be drained.
Before the technician arrives
Useful while you wait: note how much fuel went in from the receipt, and whether the engine ran at all. It makes the drain quicker. While you wait: stay off the road side of the car, keep the keys out of the ignition, and have your registration ready for when the technician calls ahead.
| Call-out | £89–£199 |
|---|---|
| Drain | £199–£1,999 |
| Price agreed | On the phone, before anyone travels |
| Helpline | 01295 380724 — 24 hours |
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This page answers all of these: “petrol in diesel”; “petrol in a diesel”; “petrol into diesel”; “unleaded in diesel”; “petrol in diesel car”; “unleaded in a diesel”; “put unleaded in diesel”; “unleaded in diesel car”; “petrol in my diesel car”; “unleaded fuel in diesel”; “petrol in diesel glasgow”; “put petrol in diesel car”.
Common questions
Does topping up with the right fuel help?
No. Diluting it still sends the wrong fuel through the pump. Drain it instead.
How long until I can drive?
Usually the same day: the drain itself takes 45 to 90 minutes once the technician arrives.
Will it have damaged the engine?
Only if it has been run through the system. Caught before starting, a drain removes it cleanly.
Related
Safety first: The Highway Code, breakdowns and incidents.