What kinds of gas are common in USA?

Question

Here in Russia we have several kinds of gasoline, marked with so called 'octane level' number. The most common is 95th gasoline. It is used for mid-priced common cars. 98th used for expesive cars and 92nd and less used for cheap ones.

Is this corresponds somehow with gasoline marks in USA? Which marks are common there?

Thnks.

Answer 1

We also have an octane number. Not sure how they would correspond with your numbers but they are usually somewhere around 89 to 95. 89 is what most cars run well on. Only the high performance engines really require the higher octane numbers.

Answer 2

Here in Canada, octane ratings go from 89 to 94. The higher the octane rating, the higher the ignition temperature. Again, most cars run fine on 89. With higher performance engines with higher compression ratios, you have to increase the octane rating to prevent detonation. The one thing that gets me is a lot of people think the higher the number, the cleaner the gas. Not so in a long shot. The production of 94 costs the manufacturer about 2cents more a litre than 89, but at the pump, it could be 15 cents more a litre.