--- title: Wrong fuel in Mortimer — drain from £89 url: https://mis-fueldoctor.co.uk/areas/mortimer/ focus: wrong fuel in mortimer phone: 01295 380724 updated: 2026-08-05 --- # Wrong fuel in Mortimer? We come to you **Short answer** If you have put the wrong fuel in your vehicle in Mortimer, Berkshire, do not start the engine — call 01295 380724. A mobile technician attends anywhere in Mortimer, drains the contaminated fuel on-site, flushes the fuel lines and refills with clean fuel. Most jobs take 45 to 90 minutes and cost between £89 and £1,500, quoted on the phone before we travel. We also collect and dispose of contaminated fuel, heating oil and kerosene across Berkshire, 24 hours a day. [Call 01295 380724 — 24/7, nationwide](tel:+441295380724) ## Mortimer cover at a glance Place | Mortimer | County / region | Berkshire | Postcode | RG7 | Service | Mobile wrong-fuel drain, fuel collection and disposal | Covers | Petrol in diesel, diesel in petrol, AdBlue, unleaded in diesel, red diesel, heating oil and kerosene collection | Typical cost | From just £89 | Time on site | 45–90 minutes | Helpline | 01295 380724 — 24 hours | ## What we do in Mortimer [**Petrol in a diesel car** Petrol strips the lubrication diesel gives the pump and injectors, so it must come out before the engine runs.](/petrol-in-diesel/)[**Diesel in a petrol car** Diesel will not ignite on a spark, so the engine misfires, smokes or refuses to start. A drain normally resolves it.](/diesel-in-petrol/)[**AdBlue in the diesel tank** AdBlue is corrosive to fuel-system components. It is a contamination problem and needs a full drain and flush.](/adblue-in-diesel-tank/)[**Red diesel or agricultural fuel in a road vehicle** Red diesel in a road vehicle is both a mechanical and a legal problem. It is drained, flushed and disposed of under licence.](/red-diesel-in-tank/)[**Contaminated or bad fuel** Water, debris or stale fuel behaves like a misfuel. Same fix: full drain, flush, clean fuel in.](/contaminated-fuel/)[**Mobile fuel drain** The contaminated fuel is pumped out where the vehicle stands, the lines are flushed and clean fuel goes in.](/mobile-fuel-drain/)[**Wrong fuel rescue** One call, one technician, one visit. We attend forecourts, roadsides, homes and workplaces nationwide.](/wrong-fuel-rescue/)[**Wrong fuel in a van, HGV or fleet vehicle** Commercial vehicles carry more fuel and cost more per hour off the road. Vehicles over 3.5t are quoted separately.](/wrong-fuel-in-a-van/)[**What a fuel drain costs** The misfuel callout fee starts at just £89. The full price is confirmed on the phone before a technician sets off.](/wrong-fuel-cost/)[**Symptoms of the wrong fuel** Misfire, smoke, knocking, loss of power or a refusal to restart shortly after filling up. Pull over, switch off, call.](/wrong-fuel-symptoms/)[**Damage, repairs and insurance** Caught before starting, damage is rare. Once the engine has run, the pump and injectors are involved and the job grows.](/wrong-fuel-damage/)[**Wrong fuel** Whatever went in the tank, it comes out before the engine runs. One call, one technician, one visit.](/wrong-fuel/)[**Misfuel** Misfuelling is the industry word for putting the wrong fuel in. It is fixed on-site with a drain and flush.](/misfuel/)[**Fuel doctor** A fuel doctor is a mobile wrong-fuel specialist. We attend, diagnose, drain and flush where the vehicle stands.](/fuel-doctor/)[**Fuel Fixer** Fuel Fixer is the parent company behind Misfuel Doctor, drawing on years of wrong-fuel work across the UK.](/fuel-fixer/)[**Fuel drain** The tank is pumped out, the lines are flushed and clean fuel goes in, with no tow and no garage.](/fuel-drain/)[**AdBlue in diesel** AdBlue belongs in its own tank. In the diesel tank it corrodes fuel-system components and must be drained out.](/adblue-in-diesel/)[**Unleaded in diesel** Unleaded is petrol. In a diesel tank it strips the lubrication the pump and injectors rely on.](/unleaded-in-diesel/)[**Diesel in gasoline** Gasoline is the American word for petrol. Diesel in a petrol engine will not ignite on a spark, so it misfires or will not start.](/diesel-in-gasoline/)[**Gasoline in diesel** Gasoline is petrol. In a diesel engine it removes lubrication from the pump and injectors as soon as it circulates.](/gasoline-in-diesel/)[**Fuel collection** Surplus, off-spec or unwanted fuel collected from tanks, drums and bowsers by a registered waste carrier.](/fuel-collection/)[**Contaminated fuel collection** Water-ingressed, bugged or mixed fuel uplifted from your tank, with a waste transfer note issued on site.](/contaminated-fuel-collection/)[**Heating oil collection** Domestic and commercial heating oil pumped out of the tank before decommissioning, a move or a tank replacement.](/heating-oil-collection/)[**Kerosene collection** Kerosene uplifted from domestic tanks, bunded tanks and drums by a registered carrier, with paperwork issued.](/kerosene-collection/)[**Fuel disposal** Fuel is a controlled waste. It is collected under licence and processed for recycling, never poured away.](/fuel-disposal/)[**Heating oil disposal** Old, sludged or contaminated heating oil removed and disposed of compliantly, with a waste transfer note.](/heating-oil-disposal/)[**Kerosene disposal** Kerosene removed and disposed of through licensed channels, with duty-of-care documentation on request.](/kerosene-disposal/)[**Screen wash in the AdBlue tank** Screen wash dilutes and contaminates the AdBlue, and the SCR system will fault before long. The tank needs draining and flushing.](/screen-wash-in-adblue-tank/)[**AdBlue in the screen wash tank** AdBlue in the washer bottle smears the screen and attacks seals and paint. The bottle and lines are drained and flushed.](/adblue-in-screen-wash-tank/)[**Diesel in the AdBlue tank** Diesel in the AdBlue tank contaminates the urea and can damage the SCR injector and pump. It must come out before the engine runs.](/diesel-in-adblue-tank/)[**Petrol in the AdBlue tank** Petrol in the AdBlue tank contaminates the urea solution and attacks the SCR components. Drain it before starting up.](/petrol-in-adblue-tank/)[**AdBlue in the petrol tank** AdBlue is a water-based urea solution. In a petrol tank it is corrosive to fuel-system components and needs a full drain and flush.](/adblue-in-petrol-tank/)[**Water in the diesel tank** Water sinks below the diesel and reaches the pump first, stripping lubrication and causing rough running or a no-start.](/water-in-diesel-tank/)[**Water in the petrol tank** Water in petrol causes misfires, stalling and a refusal to start. The tank is drained, the lines flushed and clean fuel added.](/water-in-petrol-tank/)[**Water in the AdBlue tank** AdBlue is already a precise 32.5% urea solution. Adding water pushes it out of spec and the SCR system will log a fault.](/water-in-adblue-tank/)[**Water in the screen wash tank** Plain water in the washer bottle freezes in winter and can split the bottle, pump or lines. It is drained and refilled properly.](/water-in-screen-wash-tank/)[**Screen wash in the petrol tank** Screen wash is mostly water and alcohol. In a petrol tank it is a contamination event and the tank must be drained before starting.](/screen-wash-in-petrol-tank/)[**Screen wash in the diesel tank** Screen wash in diesel strips lubrication from the pump and injectors in the same way water does. Drain it before the engine runs.](/screen-wash-in-diesel-tank/) ## What to do right now - Do not turn the key or start the engine — that is what turns a drain into a repair. - Do not move the vehicle. On a forecourt, apply the handbrake and tell the station staff. - Call 01295 380724 with your location, vehicle and which fuels were mixed. You get the price before we set off. - A technician attends with a licensed drainage unit and makes the area safe. - The contaminated fuel is pumped out and the fuel lines are flushed through. - Clean fuel goes in, the vehicle is started and checked, and you drive away. The waste fuel leaves with us for compliant disposal. [Call 01295 380724 now](tel:+441295380724) ## Prices in Mortimer Guide prices. Your exact price is confirmed on the phone before a technician sets off. Your situation | What is involved | Typical cost | Time on site | Spotted it, engine never started | Drain the tank, flush the lines, refill with clean fuel | From just £99 | 45–90 mins | Engine started but not driven | Drain plus a flush of the lines and filter | Mid range | 1–2 hours | Driven a short distance | Drain, flush and a check of the pump and injectors | Higher | 1–3 hours | Driven until it lost power or cut out | Drain, flush and fuel-system diagnosis | Upper end | Assessed on site | AdBlue in the diesel tank | Full drain and flush of tank and fuel lines | Quoted per vehicle | 1–3 hours | [Call 01295 380724](tel:+441295380724) ## Where we attend around Mortimer We cover postcode district RG7 and the surrounding roads, including the Reading post town area of Berkshire. Forecourts, roadsides, home driveways, workplace car parks, oil tanks and depots all count. Give the operator your postcode on the phone and you get the price and an arrival window before a technician sets off. ### Neighbouring places we cover [Aldermaston](/areas/aldermaston/)[Bradfield](/areas/bradfield/)[Burghfield Common](/areas/burghfield-common/)[Silchester](/areas/silchester/)[Theale](/areas/theale/)[Reading](/areas/reading/)[Slough](/areas/slough/)[Newbury](/areas/newbury/)[Thatcham](/areas/thatcham/)[Wokingham](/areas/wokingham/)[Ascot](/areas/ascot/)[Bracknell](/areas/bracknell/)[Maidenhead](/areas/maidenhead/)[Windsor](/areas/windsor/) ### Nearby towns in Berkshire [Reading](/areas/reading/)[Slough](/areas/slough/)[Newbury](/areas/newbury/)[Thatcham](/areas/thatcham/)[Wokingham](/areas/wokingham/)[Ascot](/areas/ascot/)[Bracknell](/areas/bracknell/)[Maidenhead](/areas/maidenhead/)[Windsor](/areas/windsor/)[Spital](/areas/spital/)[Tilehurst](/areas/tilehurst/)[Buckinghamshire](/areas/buckinghamshire/) ### Answers [What happens if you put the wrong fuel in your car?](/answers/what-happens-if-you-put-the-wrong-fuel-in-your-car/)[What happens if you put wrong fuel in car?](/answers/what-happens-if-you-put-wrong-fuel-in-car/)[What to do if you put the wrong fuel in your car?](/answers/what-to-do-if-you-put-the-wrong-fuel-in-your-car/)[How to drain wrong fuel from car?](/answers/how-to-drain-wrong-fuel-from-car/)[I put wrong fuel in my car?](/answers/i-put-wrong-fuel-in-my-car/)[What happens when you put the wrong fuel in your car?](/answers/what-happens-when-you-put-the-wrong-fuel-in-your-car/)[I put the wrong fuel in my car?](/answers/i-put-the-wrong-fuel-in-my-car/)[What happens if you put the wrong petrol in your car?](/answers/what-happens-if-you-put-the-wrong-petrol-in-your-car/) ### From the blog [Misfuelled in Dulwich London? The local guide](/blog/misfuelled-in-dulwich-london-the-local-guide/)[Misfuelled in Feltham London? The local guide](/blog/misfuelled-in-feltham-london-the-local-guide/)[Misfuelled in Greenwich London? The local guide](/blog/misfuelled-in-greenwich-london-the-local-guide/)[Misfuelled in Holloway London? The local guide](/blog/misfuelled-in-holloway-london-the-local-guide/)[Misfuelled in Kings Cross London? The local guide](/blog/misfuelled-in-kings-cross-london-the-local-guide/)[Misfuelled in Mill Hill London? The local guide](/blog/misfuelled-in-mill-hill-london-the-local-guide/) **4.8** out of 5 ★★★★★ Fuel Fixer, the company behind Misfuel Doctor, holds a rating of 4.8 out of 5 from [2,190 reviews on Trustpilot](https://uk.trustpilot.com/review/www.fuelfixer.co.uk), on a profile claimed since 2017. Across recent reviews, the themes customers raise most often are staff who stay polite, professional and reassuring during what is a stressful situation, and how quickly a technician arrives and gets the vehicle back on the road in Mortimer. The most common criticism is price. Some customers have felt the cost of an emergency drain was steep for a job that takes under two hours, and that is fair comment on an emergency call-out. It is why the misfuel call-out fee now starts at just £89 and why the full figure is quoted on the phone before a technician sets off — so nothing about the cost is a surprise at the roadside. ## Common questions **Can I drive with petrol in a diesel car?** No. Starting or driving pumps it through the system and can turn a straightforward drain into an expensive repair. Leave the vehicle where it is and call 01295 380724. **How long does the drain take?** About 45 to 90 minutes on site once the technician arrives. Vehicles that were started or driven take longer, because the lines and filter need flushing as well as the tank. **How much does it cost in Mortimer?** Most jobs fall between £89 and £1,500 depending on the vehicle, how much wrong fuel is in the tank and whether the engine was started. You get the price on the phone before we travel. **Will it have damaged the engine?** Only if it has been run through the system. Caught before starting, it sits in the tank and a drain removes it cleanly. **Does insurance cover it?** Often not. Most car insurance policies exclude misfuelling as standard, though some breakdown policies and optional add-ons include it. Check your own wording. **Do you cover Mortimer?** Yes. Mobile technicians attend forecourts, roadsides, homes and workplaces across Mortimer, 24 hours a day. ### Who you are dealing with Misfuel Doctor is a brand of [Fuel Fixer Ltd](https://www.fuelfixer.co.uk/) (company number 08520551), a company of Fuel Fixer International, the multinational group behind this website. Fuel Fixer International is owned by [Stockbridge Capital Holdings](https://stockbridgecapitalholdings.com/), a private equity group. Work is carried out by Fuel Fixer Ltd technicians under ISO 9001 and ISO 14001, with Environment Agency waste-carrier registration. Searching for the same help under a different name? [Wrong Fuel](https://wrongfuel.co.uk/) is the same team, same from just £89 misfuel callout fee. ### Across the Fuel Fixer network - [**Wrong Fuel** ](https://wrongfuel.co.uk/) — wrong fuel emergency help, UK-wide. - [**Fuel Fixer Scotland** ](https://fuelfixer.scot/) — wrong fuel drains across Scotland. - [**Motor Servicing** ](https://motorservicing.co/) — mobile car servicing that comes to you. - [**Fuel Fixer** ](https://www.fuelfixer.co.uk/) — the operating company behind this service. - [**Stockbridge Capital Holdings** ](https://stockbridgecapitalholdings.com/) — the private equity group that owns Fuel Fixer International. Background reading: [AA wrong fuel advice](https://www.theaa.com/breakdown-cover/advice/wrong-fuel). Service operated by [Fuel Fixer](https://www.fuelfixer.co.uk/), alongside [Wrong Fuel](https://wrongfuel.co.uk/), [Fuel Fixer Scotland](https://fuelfixer.scot/) and [Motor Servicing](https://motorservicing.co/), part of Fuel Fixer International and owned by [Stockbridge Capital Holdings](https://stockbridgecapitalholdings.com/).