Over time ordinary fuels can stop your engine working as well as it should. That’s because harmful deposits can build up on critical engine components - such as intake valves and fuel injectors - stopping engines from running as efficiently as they were designed to. With ongoing use BP Ultimate Unleaded removes an average of 95% of existing harmful deposits that stop your engine working as efficiently as it should - and keeps it clean too. Plus it contains a special friction modifier which helps lower engine friction to improve performance and efficiency.
‘Ordinary fuels’ are those which meet the British Standard specifications for automotive fuels – Diesel or Unleaded Petrol 95 - but do not claim to provide any proven performance benefits to consumers. A performance benefit is, for example, an ability to clean critical engine components.
5 Reasons to use BP Ultimate Unleaded
How BP Ultimate Unleaded cleans your engine
The images show an intake valve from a petrol engine before and after running on BP Ultimate Unleaded. As you can clearly see, the valve on the left is heavily coated with black carbon deposits as a result of the engine running continuously on ordinary unleaded petrol. On the right, is the same valve now virtually as clean as new after the engine was switched to BP Ultimate Unleaded and run for some 6000 miles. Overall, BP Ultimate Unleaded’s remarkable cleaning ability removes an average 95% - and up to 98% - of the existing harmful deposits that stop your engine working as it should.
How BP Ultimate Unleaded protects your engine
As well as protecting against rust, BP Ultimate Unleaded is designed to reduce friction in the engine. Its special friction-reducing formula provides a protective coating on the upper cylinder walls, helping to reduce friction between the piston rings and cylinder walls. Additionally, the friction reducing components in BP Ultimate Unleaded build up in your engine lubricant over time, helping to improve the properties of your lubricant as well. Reducing engine friction means that less energy is lost, so more of the fuel energy can be converted to useful mechanical output, contributing to better fuel economy and improved performance.
How BP Ultimate Unleaded increases efficiency
BP Ultimate Unleaded has been designed to increase your engine’s efficiency and give you more miles per tank in three very important ways. First, the basic business of combustion: BP’s best petrol fundamentally burns better than ordinary fuels, which means the process of combustion is more efficient and so less energy is wasted. Second, our advanced fuel formulation includes very special friction reducing components. These help to reduce friction between the piston rings and cylinder walls, meaning that less energy is lost. And thirdly, BP Ultimate Unleaded cleans your engine as you drive along, ensuring that vital parts like valves and injectors don’t become clogged up with harmful deposits.
How BP Ultimate Unleaded increases performance
A combination of high octane, powerful engine cleaning and reduced friction means that BP Ultimate Unleaded can make it feel like you’re driving with a bigger engine. Octane is a measure of petrol’s combustion quality. If pockets of fuel and air explode ahead of the flame, this is called knock. The modern engine management system deals with this by de-tuning the engine to protect it from damage, but this reduces power output. With its higher octane quality of 97 RON minimum BP Ultimate Unleaded burns better than ordinary petrol, and protects the engine from knock. By burning more smoothly and completely, it releases energy more efficiently, leading to enhanced engine performance with better fuel economy and less emissions.
How BP Ultimate Unleaded reduces exhaust emissions
Only a clean engine with the correct fuel and air flow can provide optimised combustion. With its advanced engine cleaning formulation, BP Ultimate Unleaded can remove an average 95% of deposits that build up on critical engine components, and can prevent new ones from forming. A clean engine is a more efficient engine, which in turn produces fewer emissions. And tests in a range of vehicles confirm that using BP Ultimate Unleaded instead of ordinary petrol can help reduce the harmful emissions from your car’s exhaust.
Watch how it works
Reduce Exhaust Emissions
What's in it?
BP Ultimate Unleaded is an advanced high octane fuel. Its unique formulation contains a number of ingredients, each of which has been designed to perform a special task to help deliver the benefits of the fuel.
BP Ultimate has been specially formulated with outstanding cleaning performance. So not only can it prevent these harmful deposits from forming, it can also powerfully clean away almost all existing deposits to help make your engine run like new again.
Its special friction-reducing formula provides a protective coating on the upper cylinder walls, helping to reduce friction between the piston rings and cylinder walls.
Rust can lead to damage and failures inside your engine and fuel system just as it can harm the outside of your car. So we’ve designed BP Ultimate fuels with special corrosion inhibitors that protect the metal parts in your engine and fuel system from rust.