• A bottle of Würth GenX Petrol and Injection Cleaner with a black label and cap.
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Würth GenX Petrol and Injection Cleaner

Würth GenX Petrol and Injection Cleaner

Concentrated fuel system treatment engineered to eliminate contamination, clean injectors, and restore fuel efficiency across petrol engines.

0893999100

In stock

⚙ Ideal For

  • Injection system cleaning
  • Fuel system contamination removal
  • Water elimination from fuel
  • Varnish and resin removal
  • Fuel consumption reduction

✔ Benefits

  • Cleans blocked injectors
  • Removes varnish deposits
  • Eliminates water contamination
  • Reduces fuel consumption
  • Extends catalyst lifespan
DETAILED DESCRIPTION →
£14.99 GBP
£14.99 GBP
£12.49 Ex. VAT
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🚚 UK Shipping: Standard (£2.99) or FREE on orders over £75.

📦 Dispatched same-day if ordered before 3pm!

Shipping Information

What Are My Shipping Options?

In-Store Pickup

In-Store pickup is available on all purchase. Pickups are available Monday - Friday between the hours of 9:00–17:00. 

An email confirmation will be sent when your order is ready for collection. 

Free Shipping

We offer free Standard (2-3 Days) shipping on orders within the United Kingdom on orders over £100. Please note, some large items that require specialist courier companies, such as large mirrors and palleted items are excluded from this deal.

Shipping Fees

We also offer shipping at the following rates:

Standard-Size Parcel

Standard (UK Only) - 2-3 Days - £2.99

Express (UK Only) - 1-2 Days - £4.99

International (EU) - 3-7 Days - £14.99

International (ROW) - 5-10+ Days -£23.99


Large Parcel

Standard (UK Only) - 2-3 Days - £2.99

Express (UK Only) - 1-2 Days - £4.99

International (EU) - 3-7 Days - £14.99

International (ROW) - 5-10+ Days - £69.99

Most UK orders will be sent using Royal Mail, with larger items being sent with DPD.

International orders within the EU will normally be dispatched with Royal Mail, DPD, or UPS.

International orders to the rest of the world will normally be sent with DPD or UPS.

Please note, international delivery charges are very volatile and subject to change. We will do everything in our power to honour the delivery fee, however, in some cases, shipping may increase in price. In this event, you will be given the offer to pay the difference or cancel the order and receive a full refund.

Please note, we may be subject to various rules and restrictions in relation to some international deliveries, and you may be subject to additional taxes and duties over which we have no control. If such cases apply, you are responsible for complying with the laws applicable to the country where you live and will be responsible for any such additional costs or taxes.

Dispatch Times

Orders placed before 15:00 Monday - Friday will be shipped on the same day. 

Orders placed after this time will be shipped on the following business day,

Please note, we are closed at weekends, as well as English Bank Holidays.

Returns Policy

Our refund policy can be found at the following address: https://esupplyline.com/policies/refund-policy.

Further Information

You can contact us for further information on our shipping policies using the following:

Phone: 01953 711 881

Email: sales@esupplyline.com

Live Chat: Available on our website, Monday - Friday, 8:30 - 17:00.

Contact Form: https://esupplyline.com/pages/contact

View full details

Würth GenX Petrol and Injection Cleaner

Würth GenX Petrol and Injection Cleaner is a concentrated fuel system treatment engineered to eliminate contamination and restore fuel injection performance. The advanced formulation removes varnish, resin, and oxidation residues whilst eliminating water and extending catalytic converter lifespan through cleaner combustion.

Key Features

  • Concentrated Fuel Enhancing Technology — The advanced formulation ensures fuel burns cleanly and efficiently, maximising combustion quality and reducing emissions.
  • Eliminates Contamination in Fuel System — The cleaning action targets comprehensive fuel system contamination including suspended particles, varnish, and water accumulation.
  • Removes Water from Fuel —Chemically binds and removes water contamination that accumulates in fuel tanks through temperature cycling and humidity, preventing corrosion and microbial growth.
  • Cleans Injectors of Residue and Blockages — The concentrated cleaning power dissolves and suspends injector deposits that restrict fuel flow and distort spray patterns, clearing blockages completely.
  • Removes Varnish and Resin Deposits — Targets the sticky oxidised fuel residues that accumulate on fuel lines, fuel pumps, injector tips, valve seats, and intake valves.
  • Removes Oxidation Residues — Addresses the products of fuel oxidation that degrade fuel quality and create performance-degrading deposits throughout the system.
  • Extends Catalytic Converter Lifespan — Cleaner fuel and optimised combustion reduce the contamination load on catalytic converters, extending their functional lifespan and reducing replacement costs.
  • Reduces Fuel Consumption — Cleaner injectors and optimised fuel delivery mean more complete combustion and less wasted fuel, with noticeable consumption reduction.
  • Improves Engine Starting — Cleaning clogs and deposits restores proper fuel delivery, particularly benefiting cold-start performance and reliability.
  • Restores Jet Pattern Precision — Removes deposits that distort injector spray patterns, restoring the precise atomisation that modern engines require for efficient combustion.
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Description

Concentrated Formulation as Efficiency Advantage

Most fuel additives are dilute — mixed with carrier oils or solvents to reduce cost. Würth GenX uses concentrated formulation, meaning more active cleaning chemistry per unit volume. This concentration allows smaller treatment volumes (200 mL) to treat larger fuel tanks effectively, improving cost efficiency and ease of transport.

Petrol vs. Diesel Fuel Chemistry Differences

Petrol and diesel have fundamentally different characteristics requiring different cleaning chemistry. Würth engineered GenX specifically for petrol systems — its formulation targets the specific oxidation products, varnish types, and contamination profiles that petrol fuel systems experience.

Water Contamination as Progressive Problem

Water in fuel tanks initiates a cascade of problems — corrosion formation, fuel oxidation acceleration, microbial ("diesel bug") growth, and fuel quality degradation. Traditional approaches focus on one problem; GenX addresses the entire chain by removing the water source that enables these cascading failures.

Injector Deposit Formation and Combustion Efficiency

Modern petrol engines depend on precise fuel injection for emissions compliance and efficiency. Deposits that restrict or distort injector spray patterns cause incomplete combustion, increased emissions, and reduced fuel economy. GenX targets these deposits chemically, dissolving them where they form so they suspend in fuel and flow through filters for removal.

Catalytic Converter Protection Through Combustion Optimization

Catalytic converters degrade when exposed to incomplete combustion products — unburned hydrocarbons and soot that accumulate and block catalyst surface area. By optimising combustion through cleaner injectors and improved fuel delivery, GenX reduces the contamination burden on catalytic converters, extending their lifespan.

Oxidation Residue Removal as Preventative Chemistry

Fuel oxidation is progressive — it accelerates once it starts. Traditional maintenance waits for problems to develop. GenX's oxidation residue removal prevents the escalation by removing existing oxidation products that would otherwise catalyse further degradation.

Kerosene Base for Effective Cleaning

The kerosene-based formulation provides powerful solvent action specifically effective on petrol fuel system contamination, offering superior cleaning power compared to generic hydrocarbon solvents.

More Information

Application Instructions

  1. Determine fuel tank capacity — Identify your vehicle's fuel tank size to verify appropriate dosage. GenX is highly concentrated.
  2. Check current fuel level — Ideally, treat when the fuel tank is approximately one-quarter full. This ensures good mixing of the concentrated treatment with existing fuel.
  3. Prepare the treatment — Locate the fuel filler opening. Ensure the cap is accessible and undamaged.
  4. Shake the container well — Mix GenX thoroughly to ensure uniform consistency before emptying into fuel tank.
  5. Empty contents into fuel tank — Carefully empty the entire 200 mL container into the fuel tank through the fuel filler opening.
  6. Replace fuel filler cap — Securely close the fuel filler cap.
  7. Drive the vehicle normally — No special driving procedure is required. Normal driving circulates the treatment through the fuel system.
  8. Allow circulation — As you drive, the treatment circulates through fuel lines, pumps, and injectors, cleaning and removing deposits.
  9. Complete fuel tank cycle — For maximum benefit, allow at least one complete fuel tank cycle before refuelling. This ensures the concentrated treatment has circulated thoroughly throughout the system.
  10. Observe improvements — Monitor fuel consumption, starting characteristics, and engine smoothness over the following days as deposits dissolve and fuel system performance improves.
  11. Note reduced consumption — Fuel economy improvement is typically noticeable after the first complete treatment cycle as injection efficiency improves.

Specifications

Product Type Concentrated petrol fuel system cleaner

Format Liquid concentrate in container

Volume 200 mL

Coverage Treats standard-size fuel tanks; highly concentrated formulation

Smell Solvent-like odour

Chemical Basis Kerosene-based formulation

Density 1 g/cm³

Minimum Flash Point 0.38°C (highly flammable)

Primary Application Petrol injection system cleaning and contamination removal

Engine Type Compatibility All petrol engines with fuel injection

Fuel Type Compatibility All standard petrol grades

Contamination Removal Water, varnish, resin, oxidation residues, particulates

Injector Cleaning Dissolves and removes blockage-causing deposits

Fuel System Coverage Fuel lines, fuel pumps, injectors, valve seats, intake valves

Jet Pattern Restoration Removes distorting deposits and restores precise atomisation

Water Elimination Chemically removes water contamination from fuel

Catalytic Converter Protection Reduces contamination load, extends converter lifespan

Fuel Consumption Impact Reduces consumption through improved combustion efficiency

Starting Improvement Improves cold-start performance by clearing deposits

Emissions Reduction Cleaner combustion reduces harmful emissions

Concentrated Formulation High active chemistry content improves efficiency

Application Method Empty contents directly into fuel tank

Mixing No special procedures — mixes with fuel during normal driving

Treatment Cycle Allow one complete fuel tank cycle for maximum benefit

Results Timeline Improvements typically observed within days of treatment

Flammability Highly flammable — handle away from ignition sources

Shelf Life 24 months from production

Storage Conditions Keep in cool place, protected from direct sunlight and heat

Environmental Kerosene-based formulation with emission reduction benefits

HS Code 2710.19

Documents

FAQs

How much GenX do I need for my fuel tank?

The 200 mL concentrate treats standard-size fuel tanks (40–70 litres). For smaller tanks, you can use a proportional amount. For confirmation, check vehicle specifications for your fuel tank capacity.

Will GenX damage my catalytic converter or oxygen sensors?

No, GenX is designed to extend catalytic converter lifespan by reducing contamination through optimised combustion. The cleaner fuel and improved injection actually benefit these components.

How quickly will I see fuel consumption improvement?

Fuel consumption improvements are typically noticeable after the first complete fuel tank cycle (a few days of normal driving) as injection efficiency improves and combustion becomes more complete.

Is GenX safe for all petrol engines?

Yes, GenX is formulated for all petrol engines with fuel injection systems. It works across diverse engine sizes and technologies, from small passenger cars to larger engines.

Product Product subtotal Quantity Price Product subtotal
Würth GenX Petrol and Injection Cleaner0893999100
Würth GenX Petrol and Injection Cleaner0893999100
£14.99/ea 		£0.00
£14.99/ea £0.00