Octane after almost a year

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07-23-2024 | 09:58 AM

#11

87MirageIntruder

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Joined: Dec 2016

Posts: 584

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From: Portland OR

Great info thanks for doing these tests! I didn't know the stabilizer would lower the octane. Running a supercharger myself, this helps.

07-24-2024 | 10:37 AM

#12

Tartilla

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Joined: Aug 2019

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From: BC

Quote:

Originally Posted by Markus

Was this summer gasoline?

If so, it is not surprising that octane increases with age, as the higher octane toluene will evaporate less than the lower octane components.

Toluene has a 114 Ron+Mon/2 Octane.

Dan, thanks for sharing the info. Did I miss if this was non-ethanol?

07-24-2024 | 12:39 PM

#13

Wildman_grafix

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Joined: Jun 2007

Posts: 7,322

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From: Merritt Island, FL

The only unknown in all of this was what were the octanes to start with? At least the samples that have been setting.

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