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This is a decision drivers must face every time they are about to fill up their tanks at a gas station. Have you questioned yourself: what really makes the difference between both kinds of fuel?
The premium gasoline enables a more efficient burn in the gas chambers. It is a slightly better choice for gas economy.
Most gas stations offer three options for gas levels: regular (around 87), medium (around 89) and premium (from 91 to 93).
Some gas stations can offer up to five different options, including a so called “super premium”, which is normally classified as 93. Other places can call their medium level gas as “Plus” or “Special” and their premium “Super”.
Verify the octane index in the gasoline; this classification measures the capacity of the fuel to resist to the engine burn out, for instance. The higher the octane indexes the higher the resistance during the combustion.
There a lot of gas addictives in the market that promise to save gas and limit emissions. But the consumer protection agencies say there are reasons to be suspicious.
Usually, non leaded gasoline costs from 15 to 20c less per gallon of premium gas. This can result in good savings in a year time. About the efficiency of the regular gas, the Federal Trade Commission claims there is no advantage on the use of gas premium in cars where it is not required by the manufacturer. FTC states the use of higher octane gas in cars in which it is not required will not result in better gas mileage or improve its performance.
The premium gas is worth?
Some luxury brands like BMW and Mercedes have high compression engines and require the use of premium gas to keep the engine from having problems. In the cases where the manufacturer recommends it, you should use it.