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Which Grade of Gasoline Should You Use?
Is There A Difference?
time you go to the gas station and fill up, you’re faced with an
important decision-what type of gasoline is right for your car?
Should you choose one with higher octane or not? In this article, we
will discuss gasoline, which grade of gasoline you should you use
for your car, and whether there is a difference between the various
you might know, gasoline is a mixture of hydrocarbons and it is
commonly used as fuel in spark ignition engines. The gasoline is
mixed with air and is sprayed into the engine. The heat in the
engine turns it into a vapor. A spark plug then sets off a spark
that burns the mixture. Additives are added to gasoline to make it
burn better. However, sometimes there are problems with this
procedure. Sometimes, the gasoline mixture may get ignited before it
should. This leads to the engine making an unusual sound, usually
called a knock. Different kinds of gasoline are differentiated
according to the probability of engine knocking. They are rated by
an octane number.
word octane comes from iso-octane, a hydrocarbon liquid that is used
as a measuring standard of gasoline’s anti-knock qualities. A
gasoline that has a mixture of 90 percent iso-octane and 10 percent
N-heptane is said to have an anti-knock index, or octane rating of
90. Many regular gasolines have octane ratings of 90. Adding more
octane to fuel will further prevent it from burning. This means that
fuel with less octane will burn faster than a fuel with high octane
what does this mean for you, the consumer? Well, based on the octane
ratings, Gasoline is classified into three grades-regular,
mid-grade, and premium.
gasoline has an octane rating, greater than or equal to 85 and less
gasoline has an antiknock index, or octane rating, greater than or
equal to 88 and less than or equal to 90 is classified as mid-grade
gasoline has an octane rating, greater than 90.
determining what type of grade is best suited for your particular
engine, you must consider numerous factors.
octane rating does not mean that it is best suited for the
automobile. A higher level of octane is added basically to prevent
engine knocking. For example, in order to drive at high altitude
places, high octane rating is not required. In this case, using a
fuel with higher octane rating will add to the operating cost as
higher octane rated fuels cost extra.
that have bigger and powerful engines need high-octane levels in the
gas. This is due to the fact that the engine is under high pressure
and chances of knocking increase. However, if we use premium
gasoline in a car which does not have a high performance engine, the
fuel might not burn properly, since premium gasoline is harder to
burn. This will lead to carbon deposits on the engine leading to
engine clogging. This would further reduce the miles per liter and
can prove very harmful in the long run. It may also increase
emission levels and can cause deposits on the catalytic converter.
This would be a big price to pay for a fuel that costs more and
believed to be a better one.
in a nutshell:
octane fuel can be used while traveling in the hills, however please
refer to the engine specifications prior to taking a decision.
not use high-octane fuel for old cars, or cars having less power.
gasoline is recommended for engines that perform better in terms of
refer to your specific engine specifications prior to choose the
right kind of fuel for your particular automobile.
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-part 3 in a series.
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