--- product_id: 401929226 title: "Bar's Products OS-1-4PK Oil Seal (Engine Oil Burning/Leak Repair) | Repairs Leaking Main Seals and Gaskets, Renews Worn Valve Seals and Guides, Stops Oil Burning & Blue Exhaust Smoke" brand: "bar's leaks" price: "261.96 DT" currency: TND in_stock: true reviews_count: 13 category: "Bar's Leaks" url: https://www.desertcart.tn/products/401929226-bars-products-os-1-4pk-oil-seal-engine-oil-burning store_origin: TN region: Tunisia --- # Universal fit for gas & diesel engines Stops oil burning & blue exhaust smoke Repairs seals & gaskets in 3-10 cylinder engines Bar's Products OS-1-4PK Oil Seal (Engine Oil Burning/Leak Repair) | Repairs Leaking Main Seals and Gaskets, Renews Worn Valve Seals and Guides, Stops Oil Burning & Blue Exhaust Smoke **Brand:** bar's leaks **Price:** 261.96 DT **Availability:** ✅ In Stock ## Summary > 🛢️ Seal the deal before your engine screams for help! ## Quick Answers - **What is this?** Bar's Products OS-1-4PK Oil Seal (Engine Oil Burning/Leak Repair) | Repairs Leaking Main Seals and Gaskets, Renews Worn Valve Seals and Guides, Stops Oil Burning & Blue Exhaust Smoke by bar's leaks - **How much does it cost?** 261.96 DT with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.tn](https://www.desertcart.tn/products/401929226-bars-products-os-1-4pk-oil-seal-engine-oil-burning) ## Best For - bar's leaks enthusiasts ## Why This Product - Trusted bar's leaks brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Trusted for 75+ Years:** Proven brand reliability to avoid costly repairs - • **Easy & Effective Repair:** Simple application that seals leaks, drips, and worn valve seals fast - • **Multi-Application Power:** Effective on cars, trucks, motorcycles, boats, RVs, ATVs & lawn equipment - • **Oil Consumption Control:** Stops oil burning and reduces blue smoke for engines consuming up to 1 quart/day - • **Universal Engine Compatibility:** Works seamlessly with gasoline, diesel, turbo, EcoBoost, hybrid & racing engines ## Overview Bar's Products OS-1-4PK Oil Seal is a universal, trusted engine oil burning and leak repair solution designed for gasoline and diesel engines, including turbocharged and hybrid models. It effectively stops oil consumption, seals worn valve seals and gaskets, and reduces blue exhaust smoke across a wide range of vehicles and equipment, making it a must-have preventative fix for professional-grade engine maintenance. ## Description Your vehicle is a good candidate for Bar’s Leaks Oil Seal Engine Oil Burning & Leak Repair if it does not consume more than one quart of oil per day. We have designed this product to work in all gasoline and diesel engines including turbocharged, EcoBoost, hybrid and even racing engines. . This covers 3, 4, 5, 6, 8 and 10 cylinder engines in all cars, trucks, vans and SUV’s. Our product can also be used in heavy-duty applications referencing the appropriate dosage level. This applies to a wide range of other motor applications too: tractors, boats, RV’s, motorcycles (including wet clutch), ATV’s, lawn equipment. Review: Does the job - Easy to use and does what it says Review: Don't be sceptical! - I put the SO-1 into my engine and turned on the engine sat there for 20mins then drove for 20miles got home and checked my dip stick still where it was when I started my drive, now a few days before I had changed my oil, the next day I replaced my front brake pads I noticed my lower wishbone was very shiny it was soaked in oil, now it isn't, so SO-1 must have worked caramba! Happy me, and no I did not think it would work and now think £22.00 was money well spent, well done Bars Leaks! ## Features - DON'T GAMBLE ON AN UNPROVEN BRAND: A leaking engine, head gasket, cooling system, power steering or transmission is your one shot to avoid a bigger repair bill – reach for the brand proven for over 75 years - REPAIRS LEAKING MAIN SEALS AND GASKETS: We have designed this product to work in all gasoline and diesel engines including turbocharged, EcoBoost, hybrid and even racing engines. - RENEWS WORN VALVE SEALS AND GUIDES: Your vehicle is a good candidate for Bar’s Leaks Oil Seal Engine Oil Burning & Leak Repair if it does not consume more than one quart of oil per day. - STOPS OIL BURNING & BLUE EXHAUST SMOKE: This covers 3, 4, 5, 6, 8 and 10 cylinder engines in all cars, trucks, vans and SUV’s. Our product can also be used in heavy-duty applications referencing the appropriate dosage level. - SEAL ALL OTHER OIL LEAKS, DRIPS AND CONSUMPTION: This applies to a wide range of other motor applications too - tractors, boats, RV’s, motorcycles (including wet clutch), ATV’s, lawn equipment. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B0764H6K45 | | Automotive Fit Type | Universal Fit | | Best Sellers Rank | 10,468 in Automotive ( See Top 100 in Automotive ) 194 in Car Engine Oils | | Brand | Bar's Leaks | | Brand Name | Bar's Leaks | | Compatible with Vehicle Type | Motorcycle | | Container Type | Bottle | | Customer Reviews | 4.1 out of 5 stars 3,634 Reviews | | Global Trade Identification Number | 00046087010358 | | Included Components | 16.9 oz Oil Seal | | Item Type Name | Oil Seal (Engine Oil Burning/Leak Repair) | | Item Weight | 1.1 Pounds | | Liquid Volume | 16.9 Fluid Ounces | | Liquid volume | 16.9 Fluid Ounces | | Manufacturer | Bar's Products | | Manufacturer Part Number | OS-1 | | Model Number | OS-1 | | Number of Packs | 1 | | Package information | Bottle | | Size | Pack of 1 | | UPC | 046087010358 | | Unit Count | 16.9 millilitre | | Vehicle service type | Motorcycle | ## Product Details - **Brand:** Bar's Leaks - **Liquid volume:** 16.9 Fluid Ounces - **Package information:** Bottle - **Vehicle service type:** Motorcycle - **Viscosity:** 15W 40 ## Images ![Bar's Products OS-1-4PK Oil Seal (Engine Oil Burning/Leak Repair) | Repairs Leaking Main Seals and Gaskets, Renews Worn Valve Seals and Guides, Stops Oil Burning & Blue Exhaust Smoke - Image 1](https://m.media-amazon.com/images/I/81wHGFYridL.jpg) ## Questions & Answers **Q: Should i drain 1/2 qt out of a full crankcase before adding this so as not to overfill?** A: I would **Q: Este producto tambien funsiona cuando el agua se mezcla gon el aceite?** A: No, este producto no ayudará con ese problema. Es posible que se esté desarrollando un problema con la junta de la culata. Póngase en contacto con nuestro equipo de profesionales de servicio técnico en el siguiente enlace. Por favor, agregue la mayor cantidad de descripción sobre la marca y modelo del año del vehículo, así como el problema que está tratando. Enlace de contacto: https://barsleaks.com/contact-us/ **Q: How much should i use for 2011 chrysler town and country and also would i apply this after an oil change?** A: That vehicle has a 6 quart capacity. One bottle treats oil capacity from 4.5 quarts (4.3 liters) to 7 quarts (6.6 liters). Please use one full bottle after oil change. Make sure you are 1/2 quart low on oil before adding to the system to ensure you do not overfill. Top off with oil after adding if needed. If you have any other technical questions, feel free to contact our Technical Service Professionals at 800-345-6572 or if you would prefer you can use the contact us page on our website. **Q: I have a 1992 Mitsubishi Montero. Would you recommend to use half a bottle, 3/4 of a bottle, or a full bottle?** A: I would use 3/4 of a bottle. I looked up the 1992 Mitsubishi Montero. It looks like it can have two different engines (the 3.5L or 3.8L). Both engines have an oil capacity of 4.9L (5.18 quarts). The bottle says to use 1/2 bottle for 4.4 quarts and a 1 bottle for 6 quarts. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Does the job *by P***Y on 3 May 2026* Easy to use and does what it says ### ⭐⭐⭐⭐⭐ Don't be sceptical! *by A***D on 19 November 2025* I put the SO-1 into my engine and turned on the engine sat there for 20mins then drove for 20miles got home and checked my dip stick still where it was when I started my drive, now a few days before I had changed my oil, the next day I replaced my front brake pads I noticed my lower wishbone was very shiny it was soaked in oil, now it isn't, so SO-1 must have worked caramba! Happy me, and no I did not think it would work and now think £22.00 was money well spent, well done Bars Leaks! ### ⭐⭐⭐⭐ It's expensive and I don't know how long it lasts *by M***S on 26 May 2025* Takes a while to work but otherwise good ## Frequently Bought Together - Bar's Leaks OS-1 Oil Seal Engine Oil Burning and Leak Repair, 16.9 oz. - Bar's Leaks 1000 High Mileage Engine Repair, 16.9 oz | Restores Performance, Increases Compression & Horsepower, Stops Leaks, Noise & Smoking - Bar's Leaks High Mileage Transmission Repair-It, 16.9 Fl Oz --- ## 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.tn/products/401929226-bars-products-os-1-4pk-oil-seal-engine-oil-burning](https://www.desertcart.tn/products/401929226-bars-products-os-1-4pk-oil-seal-engine-oil-burning) --- *Product available on Desertcart Tunisia* *Store origin: TN* *Last updated: 2026-08-22*