Würth Engine Oil Performance Improver
Würth Engine Oil Performance Improver
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Key Features
- Provides advanced protection for all petrol and diesel engines.
- Extends engine service life by reducing wear and restoring oil performance.
- Protects against burnt valves and oil sludge build-up.
- Loosens deposits on resin-coated piston rings and unblocks clogged oil ducts.
- Neutralises harmful combustion acids that degrade engine oil.
- Replenishes depleted oil additives, restoring API-standard performance.
- Minimises internal friction, reducing wear and improving efficiency.
- Safe for use with oils diluted by biofuels.

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Shipping Information
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
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Description
Restore and Protect Your Engine
Würth Engine Oil Performance Improve is a hydrocarbon-based additive that enhances the performance and longevity of modern engine oils. Over time, engine oils lose effectiveness due to heat, combustion by-products, and contamination, leading to deposits, sludge, and reduced lubrication. This improver supplements depleted additives and restores optimal oil function.
Comprehensive Engine Protection
- Sludge Removal: Cleans and removes oil sludge while unblocking critical lubrication ducts.
- Deposit Control: Loosens and removes resin coatings from piston rings to restore mobility and sealing.
- Corrosion Resistance: Neutralises aggressive acids produced during combustion, reducing internal wear.
- Lubrication Improvement: Minimises friction, allowing smoother engine operation and helping reduce wear-related noise.
Versatile Application
This additive is suitable for all petrol and diesel engines, including those running with biofuel blends. By restoring oil stability and protective qualities, it ensures that engines remain efficient and protected between service intervals.
More Information
Application Instructions
- Shake the can before use.
- Add directly to the engine oil either during oil changes, or when diagnosing or repairing engines showing oil-related issues.
- 300ml is sufficient for 4.5 litres of engine oil.
- Ideal dosage is 10% of total oil volume. Reduce oil fill level accordingly.
Usage Notes
- Suitable for all petrol and diesel engines.
- Safe for both mineral and synthetic oils.
- Do not exceed recommended dosage.
Specifications
Chemical Basis: Hydrocarbon
Colour: Green
Fragrance: Oily
Contents: 300 ml
Density: 0.85 g/cm³ (at 20 °C)
Flash Point: 180 °C (min.)
Shelf Life: 24 months from production (store sealed, cool, and dry)