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Most states do not mandate certain standard gasoline grade octane ratings.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.
United States: in the US octane rating is displayed in AKI. In most areas, the standard grades are 87, 89–90, and 91–94 AKI. In the Rocky Mountain (high elevation) states, 85 AKI (90 RON) is the minimum octane, and 91 AKI (95 RON) is the maximum octane available in fuel. [79]
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.
Though gasoline is a naturally colorless liquid, many gasolines are dyed in various colors to indicate their composition and acceptable uses. In Australia, the lowest grade of gasoline (RON 91) was dyed a light shade of red/orange, but is now the same color as the medium grade (RON 95) and high octane (RON 98), which are dyed yellow. [46]
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However, premium grade gasoline may have yet higher levels of detergent additives. [11] Typically, Top Tier gasoline will contain two to three times the amount of detergent additives currently required by the EPA. [12] The extra additives are estimated to cost less than a cent per gallon. [13]
Over 200 million barrels of crude oil have been pulled out by President Joe Biden since the beginning of last year — around 40% of what was stored.
The American retirement system has earned a disappointing C+ in a global ranking, with experts saying the country’s patchwork of 401(k)s and underfunded pensions is failing its workforce.