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In the United States and Canada, octane ratings are in AKI, commonly shown as "(R+M)/2". All states require gas pumps to be labeled with the correct octane level and nearly all states do regular testing to make sure gas stations are in compliance. A minimum 82 octane fuel is recommended for most vehicles produced since 1984.
The octane rating of aviation gasoline was extremely important in determining aero engine performance in the aircraft of World War II. [3] The octane rating affected not only the performance of the gasoline, but also its versatility; the higher octane fuel allowed a wider range of lean to rich operating conditions. [3]
REC-90 is an ethanol-free, 90 octane unleaded gasoline blend designed for use in recreational/marine engines which can be damaged by the ethanol found in other gasoline blends. It is also usable in some aviation engines [ 1 ] and automotive engines, though it has not been thoroughly tested for cars and trucks.
Today's falling gas prices, explained. There are a few factors contributing to today's falling gas prices. Gas prices are once again on the decline across the U.S., bringing some relief to drivers ...
The price of regular unleaded gas on average was $3.063 per gallon on Tuesday, down from $3.183 a month ago and $3.313 a year ago, according to AAA. This story has been updated with new information.
LPG was popular in Australia, because it was less than half the price of petrol in urban areas (approx A$0.59-0.75 per litre, as opposed to A$1.10-1.35 per litre for unleaded fuel and A$1.15-1.30 per litre for diesel, in February 2010), and it is locally produced.
Gas prices have fallen or remained steady since Sep. 19 — marking about a 70-day trajectory of decline, Andrew Gross, spokesperson for motor club AAA, said Tuesday. As of Tuesday, the national ...
Octane rating is measured relative to a mixture of 2,2,4-trimethylpentane (an isomer of octane) and n-heptane. There are different conventions for expressing octane ratings, so the same physical fuel may have several different octane ratings based on the measure used. One of the best known is the research octane number (RON). The octane rating ...
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