Quote:
Jack Vines wrote:
The octane boosters which are legal and sold in auto parts stores are marginally effective. They are better than nothing, but won't get us back to the days of 100-octane.
jack vines
When were those days, Jack? I can't remember any 100 octane pump gasoline for passenger cars-- and I remember back quite a ways. Av Gas was 100+ octane, but nothing else except "racing" gasoline.
I can't believe any cars with 11:1 compression ratio or lower would gain a whit of performance with anything over about 97 octane, and they'd probably get poorer mileage with higher octane gas.
These days, many people are still wasting their money on "mid-grade" or "premium" fuel for cars that run just fine and will actually have less carbon buildup and better mileage on typical regular 84 octane.
"Knock sensors" and other electronic gadgetry contribute to today's cars running well on lower octane gasoline, but some of the same advantages of
correct octane (which is probably not the highest available) apply to the old analog cars as well.
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