Today i saw two grades of petrol in the petroleum bunk and was wondering why is this premium fuel used for??? Do premium fuel really improves the power and does it actually increases the mileage of the car??
Again after googling it, I found that
Again after googling it, I found that
The grades in fuels is the content of the octane actually (octane rating)... The regular fuel has a lower octane rate of about 87 whereas the Premium fuel has a slightly higher octane rate of about 91 or 92....
The octane rating has nothing to do with quality of the fuel other than the antiknock quality....
Now you might be thinking what is this anti-knocking behavior:
Actually during the normal combustion, the fuel-air mixture needs to be ignited only during the timed spark... but sometimes the unburned gases gets heated up and causes the fire either before or after the timed spark which leads to multiple explosions and thereby causing KNOCK... This irregular and recurrent knocks causes trouble such as repeated jerks, over-stressing of engine and loss of power....
So, if your car doesn't cause any knocking with the ordinary regular fuel, there is no use of buying a fuel with higher octane rating.....
Buying Extra octane doesn't necessarily improves the 1.Car mileage 2.Smooth starting of the engine 3.More life to the car engine 4.provide more power... Its just an misconception that Premium fuel is better than the regular ordinary fuel as you pay more...
So its better to save some bucks by using an ordinary fuel if your car works fine with it.... SAVE MONEY :)
