03-11-2017, 12:32 PM
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#34 (permalink)
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A True Z Fanatic
Join Date: May 2016
Location: Calgary
Posts: 3,799
Drives: 16 370z
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Quote:
Originally Posted by kenchan
should go shopping at sherwin williams for toulene
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Quote:
Toluene is one of the higher-value molecules already in use in many gasoline blends. The main benefit is that it's an octane booster that does not dilute the energy content of the gasoline like ethanol does. It's a C7 aromatic molecule, which means it contains a lot of energy and vaporizes easily, but not so easily that it's an air pollutant like lighter benzene (C6 aromatic) and butane (C4) molecules, which percolate out of unsealed gas tanks and contribute to smog.
The tricky thing about adding aromatics is that the total quantity in your fuel shouldn't exceed about 30%, which is the sum of all the benzene, toluene, and xylene put together. Many regular gasoline blends already contain significant amounts of aromatics -- up to 30%! -- so there's no simple way to tell how much more you can safely add. As it happens, the higher quality gasoline blends (which supposedly includes Shell and Chevron gas but don't quote me on that) already contain a lot of toluene and xylene. Adding toluene is more likely to improve low-octane gas than high-octane gas.
A rule of thumb floating around the internet is that you can safely add 10% toluene to your gas without causing engine issues. So that would increase your 93 octane gas to (93 * .9) + (114 * .1) = 95.1 octane.
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