--- title: "CURIOSITY CORNER: 2+2=5? The Art of Blending Octanes" description: Let's talk about the fascinating world of blending octanes in gasoline. Finding the perfect combination of components can really make a difference in optim --- [![AmSpec-Logo-Updated-Red](https://blog.amspecgroup.com/hubfs/Logo/AmSpec-Logo-Updated-Red.svg)](https://www.amspecgroup.com/) - [Company](https://www.amspecgroup.com/about/) - [About AmSpec](https://www.amspecgroup.com/about/) - [Management Team](https://www.amspecgroup.com/about/management-team/) - [Resources](https://www.amspecgroup.com/resources/) - [Careers](https://www.amspecgroup.com/careers/) - [AmSpec Cares](https://www.amspecgroup.com/social-responsibility/) - [Contact](https://www.amspecgroup.com/contact/) - [Sectors](https://www.amspecgroup.com/sectors/) - [Services](https://www.amspecgroup.com/services/) - [Services](https://www.amspecgroup.com/services/) - [Testing](https://www.amspecgroup.com/services/testing/) - [Inspection](https://www.amspecgroup.com/services/inspection/) - [Certification](https://www.amspecgroup.com/services/certification/) - [Locations](https://www.amspecgroup.com/locations/) [Contact](https://www.amspecgroup.com/contact/) ![AmSpec-Logo-Updated-Red](https://blog.amspecgroup.com/hubfs/Logo/AmSpec-Logo-Updated-Red.svg)                             [Company](https://www.amspecgroup.com/about/) [About AmSpec](https://www.amspecgroup.com/about/) [Management Team](https://www.amspecgroup.com/about/management-team/) [Resources](https://www.amspecgroup.com/resources/) [Careers](https://www.amspecgroup.com/careers/) [AmSpec Cares](https://www.amspecgroup.com/social-responsibility/) [Contact](https://www.amspecgroup.com/contact/)                   [Sectors](https://www.amspecgroup.com/sectors/)                   [Services](https://www.amspecgroup.com/services/) [Services](https://www.amspecgroup.com/services/) [Testing](https://www.amspecgroup.com/services/testing/) [Inspection](https://www.amspecgroup.com/services/inspection/) [Certification](https://www.amspecgroup.com/services/certification/)                   [Locations](https://www.amspecgroup.com/locations/)                           [Contact](https://www.amspecgroup.com/contact/)   [Back to all](https://blog.amspecgroup.com) Jan 20, 2025 # CURIOSITY CORNER: 2+2=5? The Art of Blending Octanes by AmSpec Team Let's talk about the fascinating world of blending octanes in gasoline. Finding the perfect combination of components can really make a difference in optimizing results. When it comes to blending, paraffin-rich components tend to play well together, while heavy aromatics don't quite mix as smoothly. There's a difference between the tested octane result on paper and how the product actually behaves when blended with other components. For instance, sub-octane products like Raffinate and Naphtha can have a blend value up to 7 numbers higher than their paper/tested value, especially when combined with positive components like Alkylate and even more so when mixed with Oxygenates such as Ethanol and MTBE. What does this mean? This means that a carefully optimized blend can outperform the expected octane rating by half a point or more, which opens up some really exciting opportunities. Beware of reaching a point of diminishing returns. While a blend using 15% Raffinate can give you a great boost, adding more Raffinate beyond that won't have the same impact. On the other hand, Alkylate performs like a “champ,” even in blends with over 60% of its composition. So, it's all about finding that sweet spot for the perfect blend. Contact our Blending specialists if you have any questions about your blending operations. Share this ### Related Posts You Might Like #### [Jun 05, 2025 Food Safety: Science in Action World Food Safety Day – June 7 , 2025 Each year, unsafe food causes over 600 million cases of foodborne illness globally. 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McGraw, Area Lab Manager – U.S. Gulf Coast **Could you please tell us a little bit about yourself and how long you've been with AmSpec?**](https://blog.amspecgroup.com/resources/employee-spotlight-deanna-j-mcgraw-area-lab-manager-u-s-gulf-coast) © 2026 - All rights reserved. ```json { "@context" : "https://schema.org", "@type" : "BlogPosting", "author" : { "@type" : "Person", "name" : "AmSpec Team", "url" : "https://blog.amspecgroup.com/author/amspec-team" }, "dateModified" : "2025-11-17T21:26:43.537Z", "datePublished" : "2025-01-20T05:00:00.000Z", "headline" : "CURIOSITY CORNER: 2+2=5? The Art of Blending Octanes", "mainEntityOfPage" : { "@id" : "https://blog.amspecgroup.com/resources/curiosity-corner-225-the-art-of-blending-octanes", "@type" : "WebPage" }, "publisher" : { "@type" : "Organization", "logo" : { "@type" : "ImageObject", "url" : "https://blog.amspecgroup.com/hubfs/Logo/AmSpec-Logo-Updated-Red.svg" } } } ```