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Fuel additives in the United States are regulated under section 211 of the Clean Air Act (as amended in January 1995). The Environmental Protection Agency (EPA) requires the registration of all fuel additives which are commercially distributed for use in highway motor vehicles in the United States, [8] and may require testing and ban harmful additives.
The new EPA standards required lower levels of detergent additives than were then being used by a few major fuel marketers. When the new regulations came in, most gasoline marketers who had previously provided higher levels of detergents reduced the level of detergents in their gasolines to meet the new standard. [ 16 ]
From 1 January 2025, Euro 2 cars and Euro 3 diesel cars will be banned in Madrid (with exceptions). [106] From 1 January 2025, Euro 3 (petrol or diesel) cars and Euro 4 diesel cars will be banned in parts of Montpellier Méditerranée Métropole (with exceptions and free public transport) and Grand Paris. [111] [112] [124]
An alternative to ethanol is ETBE, which is manufactured from ethanol and isobutene. Its performance as an additive is similar to MTBE, but due to the higher price of ethanol compared to methanol, it is more expensive. Higher quality gasoline is also an alternative, so that additives such as MTBE are unnecessary. Iso-octane itself is used. MTBE ...
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]
2,2,4-Trimethylpentane, also known as isooctane, is an octane isomer which defines the 100 point on the octane rating scale (the zero point is n-heptane). It is an important component of gasoline. Isooctane is produced on a massive scale in the petroleum industry, usually as a mixture with related hydrocarbons.
Techron is a patented fuel additive developed by Chevron Corporation and sold in its fuel operations (including Texaco and Caltex).It contains a polyether amine-based detergent, which is purported to dissolve deposits in automotive engines and prevent them from building up.
The EN 590 had been introduced along with the European emission standards.With each of its revisions the EN 590 had been adapted to lower the sulphur content of diesel fuel – since 2007 this is called ultra-low-sulphur diesel as the former function of sulphur as a lubricant is absent (and needs to be replaced by additives).
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