--- product_id: 298134909 title: "Rislone Hy-per Fuel Octane Booster,6 fl. oz, 1 Pack,4747" brand: "bar's leaks" price: "£32.29" currency: GBP in_stock: true category: "Bar's Leaks" url: https://www.desertcart.co.uk/products/298134909-rislone-hy-per-fuel-octane-booster-6-fl-oz-1 store_origin: GB region: United Kingdom --- # Boosts octane by 2 points Treats up to 20 gallons per bottle Universal fit for all fuel tanks Rislone Hy-per Fuel Octane Booster,6 fl. oz, 1 Pack,4747 **Brand:** bar's leaks **Price:** £32.29 **Availability:** ✅ In Stock ## Summary > ⛽ Elevate your fuel game—because your engine deserves premium power! ## Quick Answers - **What is this?** Rislone Hy-per Fuel Octane Booster,6 fl. oz, 1 Pack,4747 by bar's leaks - **How much does it cost?** £32.29 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.co.uk](https://www.desertcart.co.uk/products/298134909-rislone-hy-per-fuel-octane-booster-6-fl-oz-1) ## 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 - • **Power Up Your Ride:** Increases octane rating to eliminate engine knock and hesitation for smoother, more powerful performance. - • **Versatile Fuel Support:** Works seamlessly with gasoline, ethanol E10, and E15 blends—ideal for modern and classic engines alike. - • **Engine Health Insurance:** Safe for catalytic converters and oxygen sensors, helping keep your engine components cleaner and longer-lasting. - • **Fuel Efficiency Booster:** Optimizes spark timing to improve fuel mileage, saving you money at the pump over time. - • **Universal Compatibility:** Nozzle design fits all fuel tanks, including capless systems—perfect for any vehicle in your garage. ## Overview Rislone Hy-per Fuel Octane Booster is a 6 fl. oz. universal-fit additive that raises your fuel’s octane by up to 2 points, reducing engine knock and improving power and fuel efficiency. Compatible with gasoline and ethanol blends up to E15, it treats up to 20 gallons per bottle without harming catalytic converters or oxygen sensors. Designed for all vehicles, from muscle cars to hybrids, it ensures optimal engine performance and cleaner operation. ## Description Rislone Hy-per Fuel Octane Booster increases your fuel's octane rating to stop engine hesitation, knock and ping, while also increasing power and performance. The formula works equally well on classic muscle cars, newer, smaller, harder-working engines, off-road and racing applications. The increased octane allows the engine to run optimum spark timing, which not only creates more power, but also, in many engines, reduces emissions and increases fuel mileage. It's also the best insurance against bad gas you can find. ## Features - Causes damage to organs through prolonged or repeated exposure. - Flammable liquid and vapour. - May be fatal if swallowed and enters airways. - Toxic if inhaled. - Nozzle allows it to be poured into all fuel tanks, including cap less systems - Maintains optimum engine efficiency and power - Use with gasoline and ethanol E10 and E15 - 1 bottle treats up to 20 gallons of gasoline - Will not harm catalytic converters or oxygen sensors - Flash point: 46.0 degrees_celsius - Fit type: Universal Fit ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B00DTONKJ2 | | Best Sellers Rank | 405,522 in Automotive ( See Top 100 in Automotive ) 900 in Fuel Systems | | Brand | Bar's Leaks | | Customer Reviews | 4.5 4.5 out of 5 stars (1,444) | | Date First Available | 5 July 2013 | | Delivery information | We cannot deliver certain products outside mainland UK ( Details ). We will only be able to confirm if this product can be delivered to your chosen address when you enter your delivery address at checkout. | | Item Weight | 181 g | | Item model number | 4747 | | Manufacturer | Rislone | | Manufacturer part number | 4747 | | Model | 4747 | | Product Dimensions | 4.29 x 4.29 x 22.58 cm; 181 g | | Voltage | 12 Volts | ## Images ![Rislone Hy-per Fuel Octane Booster,6 fl. oz, 1 Pack,4747 - Image 1](https://m.media-amazon.com/images/I/61+myuXzbkL.jpg) ![Rislone Hy-per Fuel Octane Booster,6 fl. oz, 1 Pack,4747 - Image 2](https://m.media-amazon.com/images/I/61u3y3CRYYL.jpg) ![Rislone Hy-per Fuel Octane Booster,6 fl. oz, 1 Pack,4747 - Image 3](https://m.media-amazon.com/images/I/41X0xUy+9EL.jpg) ## Available Options This product comes in different **Style** options. ## Questions & Answers **Q: What octane will this raise 87 gas to? i need 90 for my atvs but only 87 is sold here in non-ethanol** A: According to the Rislone website this will raise the Octane 20 Points....... **Q: Why is buying a case of 12 more expensive than a single purchase?** A: I never noticed that but you’re correct. When buying a dozen you spend about $4.00 a bottle. I’d order 12 single bottles & see if they’ll sell them that way. **Q: What are the contents? What does it have in it?** A: Contains the highest concentrate of MMT Methylcyclopentadienyl Manganese Tricarbonyl allowed for street use. This product also restores lost horsepower and performance. Has an Antiknock formulation that stops engine knock and pings caused by low quality fuel. **Q: Can I use this for Harley morotcycle? How much for 6 gallon tank?** A: Yes can use it. For smaller engines use 1⁄4 bottle for every 5 gallons. For larger vehicles use 1 bottle per 18 gallons of fuel capacity, or 1 oz per 3 gallons. ## Frequently Bought Together - Rislone Hy-per Fuel Octane Booster,6 fl. oz, 1 Pack,4747 - LIQUI MOLY Cera Tec 3721 I Ceramic Wear & Tear Protection for Petrol & Diesel Engines I Smoother Engine Performance, Less Friction & Lower Fuel Consumption I Ceramic Additive 300 ml Pack of 1 - ATP AT-205 Re-Seal Stops Leaks, 8 Ounce Bottle --- ## 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.co.uk/products/298134909-rislone-hy-per-fuel-octane-booster-6-fl-oz-1](https://www.desertcart.co.uk/products/298134909-rislone-hy-per-fuel-octane-booster-6-fl-oz-1) --- *Product available on Desertcart United Kingdom* *Store origin: GB* *Last updated: 2026-05-25*