why is mtbe added to gasoline?
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MTBE was once commonly used in the United States but was phased out in the late 2000s as a result of water contamination concerns. Since then, fuel ethanol has replaced MTBE as a gasoline additive. MTBE is a fuel oxygenate that boosts octane ratings and helps achieve more complete combustion in gasoline engines.
192818
Lead in avgas prevents damaging engine knock, or detonation, that can result in a sudden engine failure. Lead is a toxic substance that can be inhaled or absorbed in the bloodstream, and the FAA and EPA and industry are partnering to remove it from avgas.
521535
The use of the word gasoline instead of petrol is uncommon outside North America, particularly given the usual shortening of gasoline to gas, because various forms of gaseous products are also used as automotive fuel, such as compressed natural gas (CNG), liquefied natural gas (LNG) and liquefied petroleum gas (LPG).
1009825
["It isn't as effective a fuel as traditional gasoline. ... ", 'It is a corrosive fuel. ... ', 'It requires a lot of cropland space. ... ', 'It is costly. ... ', 'Its use has resulted in a net emissions increase. ... ', 'It has altered food production principles. ... ', 'It is reliant on the quality of the growing season.']
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This differs greatly from the other natural constituents of gasoline (i.e., petroleum hydrocarbons) that consist of carbon and hydrogen alone and are relatively insoluble in water. ... MTBE is generally 30 times more soluble in water than the hydrocarbon constituents in gasoline (Table 1).
493388
Fuel injector cleaners contain polyisobutylene amine (PIBA). ... Fuel injector cleaners typically have a superior cleansing strength and last longer between applications when compared to gas treatments. Injector cleaners are added to the fuel tank at oil changes.
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Exxon and Mobil SynergyTM gasoline contains significantly higher quantities of detergents than required by the Environmental Protection Agency (EPA) and has passed key performance tests resulting in it being certified TOP TIER. TOP TIER fuel is recommended by many automakers in their vehicles' owner manuals.
951631
To put that simply, higher octane gas resists detonation, so it burns rather than exploding. But raising the octane level of gasoline is expensive; that's why premium fuel costs more than regular. Adding ethanol reduces the tendency of low-grade gasoline to detonate, enabling our national fleet to run on crappier gas.
100109
Why is ethanol in our gas? Fuel ethanol is used to enhance the octane rating of gasoline. To put that simply, higher octane gas resists detonation, so it burns rather than exploding. But raising the octane level of gasoline is expensive; that's why premium fuel costs more than regular.
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Gasoline vapors are denser than air, meaning these vapors will sink and collect at the lowest point. Effective air circulation may help disperse gasoline vapors. An open flame is not necessary to ignite gas vapors; one spark can cause gasoline vapors to ignite.
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Regulation in the United States The State of New York banned the use of MTBE as a "fuel additive", effective in 2004. MTBE use is still legal in the state for other industrial uses.
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HOUSTON -- Shell Oil Products US announced that its Regular and Plus and premium-grade gasolines now join its V-Power gasoline in meeting the "Top Tier Detergent Gasoline" standard. ... The new standard surpasses the minimum requirements for gasoline detergent additives set by the Environmental Protection Agency (EPA).
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It is not safe to fill unapproved plastic bottles, old metal gas cans, other metal containers or glass containers with gasoline. It is also against the law.
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Ethanol is a common additive to gasoline that helps it burn more completely and reduces harmful emissions. Gas stations across the United States stock fuel blended with 10 percent ethanol, and most cars on the road today can handle this fuel mix without difficulty.
1015532
All gasoline has the same specifications, so all the gasoline leaving the refinery is the same. ... Top tier gasoline contains about twice as much additive as non top tier gasoline. Top tier gasoline additives are not the same, but the differences are very slight.
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mtce = million ton of coal equivalent. mtoe = million ton of oil equivalent. boe = barrel of oil equivalent. One barrel of oil = 0.136 tons of oil.
875179
The fuel from different filling stations comes from a common source: the "base gas" from a refinery. ... A key difference is that the major brands put more additives in their gas and claim to have some secret ingredients. This extra shot of additives provides an additional level of cleaning and protection for your engine.