ESSO's 91 octane vs. Sunoco's 94 octane ???????
01-25-2007, 08:29 PM
#41
AudiWorld Senior Member
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Sorry, there are no Chevron's in Calgary. If there was, they likely wouldn't sell 94 either.
The reason being, octane requirements decrease with altitude. Ethanol is comparitive crap because it needs extra octane no matter what altitude your at.
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