--- product_id: 52344971 title: "Rislone 4447 Compression Repair Fix with Ring Seal - 16.5 oz." brand: "bar's leaks" price: "€ 47.40" currency: EUR in_stock: true url: https://www.desertcart.pt/products/52344971-rislone-4447-compression-repair-fix-with-ring-seal-16-5 store_origin: PT region: Portugal --- # Eliminates blow-by and piston slap Restores engine compression 16.5 oz precision formula Rislone 4447 Compression Repair Fix with Ring Seal - 16.5 oz. **Brand:** bar's leaks **Price:** € 47.40 **Availability:** ✅ In Stock ## Summary > ⚡️ Bring your engine back to life — don’t let compression loss slow you down! ## Quick Answers - **What is this?** Rislone 4447 Compression Repair Fix with Ring Seal - 16.5 oz. by bar's leaks - **How much does it cost?** € 47.40 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.pt](https://www.desertcart.pt/products/52344971-rislone-4447-compression-repair-fix-with-ring-seal-16-5) ## 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 by Thousands:** 4.4-star rating from 1,800+ users proving real-world reliability - • **Universal Compatibility:** Works seamlessly on gasoline and diesel engines across cars, trucks, motorcycles, and ATVs - • **Revive Your Engine's Power:** Restores lost compression for smoother, stronger performance - • **Pro-Grade Viscosity Enhancer:** Improves oil flow with 5W-30 SAE-grade viscosity for optimal engine protection - • **Seal the Deal with Ring Seal:** Stops leaks and frees sticky rings to extend engine life ## Overview Rislone 4447 Compression Repair Fix with Ring Seal is a 16.5 oz high-performance additive designed to restore lost engine compression, eliminate blow-by, and free sticky piston rings. Compatible with all gasoline and diesel engines, it improves oil viscosity and engine efficiency, backed by thousands of satisfied users and a strong 4.4-star rating. ## Description Restores Lost Compression Repairs Blow By Frees Sticky Rings Viscosity Improver Use On Any Gasoline Or Diesel Engine ## Features - Causes serious eye irritation. - May cause an allergic skin reaction. - Rislone 4447 Compression Repair Fix with Ring Seal 16.5 oz. - Brand : RISLONE - Product type: O RINGS ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B00CGRX6RE | | Automotive Fit Type | Universal Fit | | Best Sellers Rank | 24,798 in Automotive ( See Top 100 in Automotive ) 251 in Fillers, Adhesives & Sealants | | Brand Name | Bar's Leaks | | Compatible with Vehicle Type | Car, Truck, Motorcycle, ATV, etc. | | Container Type | Bottle | | Customer Reviews | 4.4 4.4 out of 5 stars (1,872) | | Global Trade Identification Number | 00078615044474 | | Item Weight | 0.35 Pounds | | Liquid Volume | 16.5 Fluid Ounces | | Manufacturer | Rislone | | Manufacturer Part Number | 4447 | | Model Number | 4447 | | SAE J300 Viscosity Grade | 30 | | Size | Pack of 1 | | UPC | 078615044474 078615444472 | | Unit Count | 487.9632 millilitre | | Viscosity Level | Medium to High | ## Product Details - **Brand:** Bar's Leaks - **Liquid volume:** 16.5 Fluid Ounces - **Package information:** Bottle - **SAE J300 Viscosity Grade:** 30 - **Vehicle service type:** Car, Truck, Motorcycle, ATV, etc. ## Images ![Rislone 4447 Compression Repair Fix with Ring Seal - 16.5 oz. - Image 1](https://m.media-amazon.com/images/I/61we3oHoC9L.jpg) ![Rislone 4447 Compression Repair Fix with Ring Seal - 16.5 oz. - Image 2](https://m.media-amazon.com/images/I/71IutJQdUcL.jpg) ![Rislone 4447 Compression Repair Fix with Ring Seal - 16.5 oz. - Image 3](https://m.media-amazon.com/images/I/7120ozphyOL.jpg) ## Questions & Answers **Q: Will this help reseal oil rings in a 3 cylinder car ? My oil is covering one of my spark plugs in the car. Will this help ?** A: No, don't but, fix your engine **Q: Where do you put the product** A: in with the oil in the oil tank! probably better to wait till its nearly empty then just add it to the oil tank as you adding your oil!! **Q: Can I use this on a jet ski engine** A: add it to existing oil as per intrutions should work same as car engine **Q: Does car need to be driven for product to work ? i have a car that cant be driven because of mot expired. thanks** A: No it doesn’t, at most engine running but doesn’t need to be driving ## Frequently Bought Together - Rislone High Mileage 4 6 8 Compression 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 OS-1 Oil Seal Engine Oil Burning and Leak Repair, 16.9 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.pt/products/52344971-rislone-4447-compression-repair-fix-with-ring-seal-16-5](https://www.desertcart.pt/products/52344971-rislone-4447-compression-repair-fix-with-ring-seal-16-5) --- *Product available on Desertcart Portugal* *Store origin: PT* *Last updated: 2026-05-08*