What is unleaded petrol? What is …
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Meghna Thapar 5 years, 6 months ago
Unleaded petrol means petrol without lead. The main difference between regular and premium fuel grades is the octane number. Regular fuel has a lower octane number 87, while Premium generally gets a 91 octane rating or higher. “Octane number”, is a measure of the ignition quality of fuel.
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