---
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
---

<https://blog.amspecgroup.com>

# [CURIOSITY CORNER: 2+2=5? The Art of Blending Octanes](https://blog.amspecgroup.com/resources/curiosity-corner-225-the-art-of-blending-octanes)

 Written by [AmSpec Team](https://blog.amspecgroup.com/author/amspec-team) | Jan 20, 2025, 5:00:00 AM

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.

[View full post](https://blog.amspecgroup.com/resources/curiosity-corner-225-the-art-of-blending-octanes)

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