--- product_id: 47965949 title: "Wynn's Engine Oil Stop Leak Additive - Prevents & Stops Oil Leaks - 325ml" brand: "wynn's" price: "€ 23.29" currency: EUR in_stock: true reviews_count: 13 url: https://www.desertcart.gr/products/47965949-wynns-engine-oil-stop-leak-additive-prevents-and-stops-oil store_origin: GR region: Greece --- # Fast-acting seal restoration Compatible with all oil types Protects engine seals & components Wynn's Engine Oil Stop Leak Additive - Prevents & Stops Oil Leaks - 325ml **Brand:** wynn's **Price:** € 23.29 **Availability:** ✅ In Stock ## Summary > 🛠️ Stop leaks before they start — keep your engine running like new! ## Quick Answers - **What is this?** Wynn's Engine Oil Stop Leak Additive - Prevents & Stops Oil Leaks - 325ml by wynn's - **How much does it cost?** € 23.29 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.gr](https://www.desertcart.gr/products/47965949-wynns-engine-oil-stop-leak-additive-prevents-and-stops-oil) ## Best For - wynn's enthusiasts ## Why This Product - Trusted wynn's brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Seal Savior:** Restores flexibility to dried-out rubber & neoprene seals, stopping leaks at the source. - • **Engine Guardian:** Forms a protective barrier against heat, oxidation, and wear to extend engine life. - • **No Engine Tear-Down:** Works without disassembly—easy, fast, and mess-free maintenance. - • **Eco & Emission Friendly:** Safe for catalytic converters and emission control systems, keeping your ride green. - • **Universal Compatibility:** Safe for petrol, diesel, LPG engines and all mineral & synthetic oils, including low SAPS. ## Overview Wynn's Engine Oil Stop Leak Additive is a 325ml high-performance formula designed to restore and protect engine seals by rehydrating rubber and neoprene components. It prevents and stops oil leaks without altering oil viscosity or requiring engine disassembly. Compatible with all engine types and oils, it safeguards engine efficiency, reduces oil consumption, and is safe for emission systems, making it an essential maintenance solution for professionals and enthusiasts alike. ## Description This advanced oil leak stopper is a high-performance solution designed to prevent and stop engine oil leaks caused by the deterioration of rubber and neoprene seals. Over time, exposure to extreme temperatures, pressure, and engine contaminants can cause seals to dry out, shrink, and crack, leading to oil leaks that affect engine efficiency. This product effectively restores the flexibility and elasticity of seals and O-rings, reinforcing their structure to prevent further damage. Thanks to its specially formulated blend of conditioning agents, this treatment deeply penetrates the seals, rehydrating and revitalising them to restore their original shape and sealing capacity. By eliminating oil leaks at the source, this solution reduces oil consumption, protects engine components, and ensures a clean and efficient operation. Its unique formulation allows it to work without requiring engine disassembly, offering a fast and convenient way to address common sealing issues. Unlike other oil additives, this leak stopper does not alter the viscosity or chemical composition of engine oil. It remains fully compatible with all mineral and synthetic engine oils, including low SAPS applications, ensuring optimal performance without any negative impact. Additionally, it is safe for use in all petrol, LPG, and diesel engines, making it a versatile choice for various vehicle types and industrial machinery. Beyond sealing leaks, this product also acts as a protective lubricant, maintaining engine seals in excellent condition. By creating a barrier against heat, oxidation, and wear, it helps extend the lifespan of engine components while preserving efficiency. Safe for catalytic converters and emission control systems, it offers a reliable and effective solution to maintaining engine health. Ideal for vehicles and equipment requiring a leak-stopping solution without complex repairs, this product is an essential addition to any maintenance routine. Whether preventing potential oil leaks or addressing existing issues, this powerful formula ensures engines remain protected, efficient, and free from unwanted oil drips. ## Features - car parts ## Technical Specifications | Specification | Value | |---------------|-------| | Asin | B0031ROB36 | | Best Sellers Rank | 489 in Automotive (See Top 100 in Automotive) 3 in Engine Oil Additives | | Brand | Wynn's | | Customer Reviews | 4.3 4.3 out of 5 stars (3,364) 4.3 out of 5 stars | | Date First Available | 23 Dec. 2009 | | Guaranteed Software Updates Until | unknown | | Item Model Number | 50664 | | Item Weight | 325 g | | Manufacturer | Wynn Oil UK | | Manufacturer Part Number | 50664 | | Model | 50664 | | Product Dimensions | 5 x 5 x 11.99 cm; 325 g | ## Images ![Wynn's Engine Oil Stop Leak Additive - Prevents & Stops Oil Leaks - 325ml - Image 1](https://m.media-amazon.com/images/I/71K3SJx844L.jpg) ## Available Options This product comes in different **Style Name** options. ## Questions & Answers **Q: How many tins are needed for big engines** A: Since the reason for using it is to seal leaky seals- especially the rear crankshaft seal - size doesn't Matter.I used it in my 2 litre engine and it worked well. Hope this is helpful. **Q: do you just put it in engine and thats it or do you need to drain oil first** A: Just add to engine as if topping up oil -- follow instructions on can. It made a significant difference to my engine. If your engine is due for a routine oil change then do this first and add Stop Leak with new oil. **Q: Will it stop oil coming out of the manifold on a Nuffield tractor?** A: It's really designed to soften old seals that have become stiff and letting oil pass, it doesn't stop oil leaking from splits etc **Q: can this be sprayed directly onto rubber parts?** A: I apply it once a year on all rubber in suspension and joints behind the wheel area. Simply pour it into a spray bottle and spray on those parts generously. It well protects them and last them longer. Just a few weeks ago I used on my sister's 2003 Ibiza who was annoyingly making squeaky noise on the right suspension area, now it is gone. A tin would be more than enough for your car all over. I got this idea from a car mechanic in this business for over 50 years. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Great for coating your engine at cold start *by on Reviewed in the United Kingdom 12 May 2026* Well this product is great, does what it says on the tin... Tbh the amount of people complaining about the inginium JLR engine, saying its noisy, there is always a posion to put into your engine to quite things down, at oil change.A grest product thank you..... ### ⭐⭐⭐⭐⭐ Does the job *by on Reviewed in the United Kingdom 2 May 2026* Stop’s oil seals becoming hard and therefore prevents leaking ### ⭐⭐⭐⭐ ... drips more than the odd bit of oil just like all the Series Land Rovers do *by on Reviewed in the United Kingdom 16 August 2016* I used this in the engine oil of my 1982 Series 3 Land Rover which drips more than the odd bit of oil just like all the Series Land Rovers do. It does appear to have made a difference but hasn't stopped the leaks completely. I didn't expect it to make much difference but I thought I'd try it out and was pleasantly surprised that there was a perceived improvement.Don't kid yourself that this will cure major oil leaks, as it won't, but it may revitalise old seals that have taken up a compression set.This product apparently works by swelling the oil seal and the engine has to be run for a couple of hundred miles for it to take effect.It won't fix split or damaged oil seals.Overall, well worth a try on minor oil leaks. Don't expect miracles on major leaks. ## Frequently Bought Together - Wynn's 50664 325ml Engine Stop Leak - Wynn's Stop Smoke 325 ml --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.gr/products/47965949-wynns-engine-oil-stop-leak-additive-prevents-and-stops-oil](https://www.desertcart.gr/products/47965949-wynns-engine-oil-stop-leak-additive-prevents-and-stops-oil) --- *Product available on Desertcart Greece* *Store origin: GR* *Last updated: 2026-09-23*