What is the Difference Between Unleaded and Super Unleaded?

The main difference between unleaded and super unleaded petrol lies in their Research Octane Number (RON), which indicates the fuel's resistance to knocking or pinging in a petrol engine. The RON of standard unleaded fuel is typically around 95, while super unleaded fuel can range from 97 to 99 RON.

Key differences between unleaded and super unleaded fuel include:

• Efficiency: Super unleaded fuel burns more efficiently than standard petrol and can produce more power in certain engines with finely tuned ignition timing.
• Performance: Higher octane fuels like super unleaded can withstand higher compression before igniting, allowing engines to use higher boost pressure and more aggressive settings for improved performance.
• Cost: Super unleaded fuel is generally more expensive than standard unleaded fuel, with the price difference varying depending on the location and fuel provider.
• Environmental Impact: Some super unleaded fuels are claimed to be better for the environment, as they may contain additives that clean the engine and help it run more efficiently.

It is essential to use the correct type of fuel for your vehicle, as using a fuel with an incorrect RON can lead to engine damage or decreased performance. Check your vehicle's fuel cap or consult the owner's manual to determine the recommended RON for your car.

Comparative Table: Unleaded vs Super Unleaded

The main difference between unleaded and super unleaded petrol lies in their octane ratings, performance, and price. Here is a table comparing the two:

Unleaded petrol has a minimum Research Octane Number (RON) of 91, while super unleaded petrol has a minimum RON of 97-98. Super unleaded petrol is more expensive than regular unleaded petrol, but it offers a higher overall performance and improved engine performance. The improved performance can be beneficial for certain types of vehicles, such as those with direct injection or turbocharged engines. It is essential to note that the choice between unleaded and super unleaded petrol depends on the specific vehicle and driving conditions.