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Premium gas must be at least 93 octane if it contains 10% or more of ethanol Maryland: 87 89 93 Massachusetts: 87 89 93 Michigan: 87 89 93 85 and 86 octane may be sold if labeled as subregular [6] Minnesota: 87 89 91 110 octane fuel may be available at certain locations in southern parts of the state. Mississippi: 87 89 93 Missouri: 87 89 91/93
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.
E15 is a higher octane fuel, it is currently available in 29 states at retail fueling stations. E15 was approved for use in model year 2001 and newer cars, light-duty trucks, medium-duty passenger vehicles (SUVs), and all flex-fuel vehicles (FFVs) by the U.S. Environmental Protection Agency (EPA) in 2012.
Whether a higher octane fuel improves or impairs an engine's performance depends on the design of the engine. In broad terms, fuels with a higher octane rating are used in higher-compression gasoline engines, which may yield higher power for these engines. The added power in such cases comes from the way the engine is designed to compress the ...
High octane value inhibits the fuel's tendency to burn nearly instantaneously (known as detonation or knock) at high compression/high heat conditions. However, in engines that utilize compression rather than spark ignition, by means of very high compression ratios (14–25:1), such as the diesel engine or Bourke engine , high octane fuel is not ...
At the time of writing, the national average price of regular gas is $3.62 per gallon, $0.02 higher than this time last year. Drivers who use premium gas are paying $0.07 more this year than last ...
According to the Energy Information Administration (EIA), as of March 2022, factors that affect the price of gasoline in the United States include the price of crude oil per barrel, costs and profits related to refining, distribution, and marketing, and taxes, along with the charge set by refiners for gasoline based on based on octane levels, with higher octane levels—premium grade cost ...
The State of New York banned the use of MTBE as a "fuel additive", effective in 2004. [6] MTBE use is still legal in the state for other industrial uses. [29] The federal Energy Policy Act of 2005 removed the oxygenate requirement for reformulated gasoline and established a renewable fuel standard. [30]