Tom,
I've scratched my head on this a few times myself. Question...Gas CAN be
refined to a higher octane (anti knock) without additives. So, isn't
detonation (explosion) just a degree of the same process of rapid burn? So
wouldn't the higher octane 'resist' the increase in rate of burn (burn
slower) compared to a non-additive standard, as the ignition advances and
pressure goes up?
Craig Carter
In a message dated 9/22/00 7:53:20 PM Pacific Daylight Time,
ra0618@email.sps.mot.com writes:
<< I have to admit some old myth's die hard. I had for ages believed that
premium
fuel burned slower. Not so, all the grades burned the same. Premium just had
the additives to prevent knock, so you can run a higher spark advance (which
creates a higher pressure, hence better performance). Of course you need
higher compression to take advantage of the advanced spark to gain the higher
combustion pressure. >>
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