What happens if you put a small amount of unleaded in a diesel car
What happens if you put a small amount of unleaded in a diesel car? A splash still matters in a modern diesel. Do not start it and do not top it up hoping to dilute it — call first. Call 01293 248666 — a mobile technician comes to the vehicle anywhere across TS1 and TS3 to TS8. Call-out £89 to £199, drain £199 to £1,999.
Local, mobile, and not a garage
There is no Wrong Fuel Middlesbrough premises, and we would rather say so than let a local name imply a local building. A technician covering TS1 and TS3 to TS8 travels to the vehicle — forecourt, driveway, car park or verge. Call 01293 248666 and you reach the people who dispatch to Middlesbrough, not a national queue.
| Search | what happens if you put a small amount of unleaded in a diesel car |
|---|---|
| What it is | Small amount of petrol in diesel |
| Where we cover | TS1 and TS3 to TS8 |
| Cost | Call-out £89 to £199, drain £199 to £1,999, quoted in full before we travel |
| Time on site | About an hour |
| Hours | 24 hours, every day |
| Phone | 01293 248666 |
What happens if you put a small amount of unleaded in a diesel car: what to do
Five litres, twenty litres, a splash — why the amount matters less than the key.
The mechanical reason the advice is always the same
Every drainer tells you not to start the engine, and it is not a sales line. The fuel path runs tank → lift pump → filter → high-pressure pump → injectors, and contamination only moves along it under power. Stationary, the problem stays in the tank where it is cheap to remove. Under power, it spreads into parts that are not.
Step by step
- Leave the key alone This is the one that decides the price. Wrong fuel sitting in a tank is a drain; wrong fuel that has been through the engine is a different job.
- Do not push or coast it Moving the vehicle can slosh contaminated fuel toward the pickup. Leave it where it is unless staying there is unsafe.
- Make yourself safe Hazards on. On a forecourt, tell the cashier — they will almost always let you stay put once they know a drainer is coming.
- Call 01293 248666 Tell us the vehicle, which fuel went in, roughly how much, and whether the engine ran. You get a full price before anyone sets off.
- We drain, flush and prime Tank emptied, lines flushed, fresh fuel in, system bled and run up before we go.
- You drive away Most jobs finish on site in about an hour. The old fuel leaves with us under a waste transfer note.
The full page for this
Related searches
What people actually said
4.8 out of 5 from 2,190 Trustpilot reviews. Two themes dominate the positive ones — how fast someone arrived, and how calm they were about it.
The recurring negative is price. Publishing that alongside the answer seems more useful than hiding it: £89 to £199 for the call-out, £199 to £1,999 for the drain, the total quoted before a technician moves, and no charge for being told on the phone that this is a job for a workshop.
Questions we get asked
What if I have already driven it?
Still call. Most vehicles driven a short distance are recoverable. Tell us how far you got, because it changes the kit we bring.
Can I just top it up with the right fuel?
No. Dilution does not fix contamination, and driving to a filling station to try it is the mile that turns a drain into a repair.
What happens to the old fuel?
It leaves with us as controlled waste under a waste transfer note. It is not tipped, and it is not resold to you.
Is this a garage?
No. Wrong Fuel Middlesbrough is mobile. A technician travels to the vehicle wherever it is standing.
Who you are dealing with
Wrong Fuel Middlesbrough is a service by Forecourt Assistance. Forecourt Assistance is a trading name of Fuel Fixer Ltd, company no 08520551, a company of Fuel Fixer International. Registered at Fairway House, Portland Road, East Grinstead, RH19 4ET. Fuel Fixer International is owned by Stockbridge Capital Holdings.
Across the network
Wrong Fuel Middlesbrough is one of the sites run by Forecourt Assistance, a trading name of Fuel Fixer Ltd, part of Fuel Fixer International, owned by Stockbridge Capital Holdings. Every site below belongs to the same company.
- Forecourt Assistance — the operator: network directory and author page
- AdBlue in Fuel — AdBlue contamination drains only
- Misfuel Doctor — misfuel help, organised by fuel mix-up
- Wrong Fuel — the evidence base; home of every statistic
- Fuel Fixer Scotland — wrong fuel across Scotland, plus Ireland
- Fuel Fixer — the group operating site
- Misfuel Servicing — wrong fuel and misfuelling help, call-only
Background reading: Waste carrier registration — GOV.UK.
Last updated · Reviewed by Rambo S, Wrong Fuel Expert