BP Ultimate Unleaded

About BP Ultimate Unleaded

BP has perfected our innovative formulation – based on patented technology – to produce BP Ultimate Unleaded 98, our best ever dirt-busting petrol. In fact, BP Ultimate Unleaded 98 busts dirt in just 2 tanks!*

BP Ultimate Unleaded is our most advanced petrol with a minimum octane number of 98 and a formulation designed to bust the dirt in your engine and restore performance.

BP Ultimate is a great way to get your engine road trip ready.  Restore the performance of your engine and go cleaner, smoother, further.

What is dirt and how does it form?

Harmful engine deposits or ‘dirt’ form and build-up over time in a vehicle’s engine. This can cause a loss in performance.

Dirt can form and bake on metal surfaces in much the same way as black sticky dirt can build up in ovens and on barbecues. This is a result of the fuels and lubricants operating under the extreme temperatures and pressures inside the engine.

Dirt is a hidden enemy that could be lurking in your engine.  When it builds up on critical engine parts, such as intake valves and fuel injectors, it can contribute to:
  • reduced engine performance
  • increased fuel consumption
  • rough running
  • critical engine parts, such as fuel injectors, needing repair
A build-up of dirt can create more dirt within the engine – it’s a vicious cycle.

What does dirt do to your petrol engine?

For petrol engines to perform as the manufacturer intended, the critical components that need to be kept clean are the intake valves and the fuel injectors.

In older port fuel injection engines, fuel is sprayed onto the back of intake valves. When dirt builds up on these valves, it can interfere with the evaporation of the fuel. In newer technology direct injection engines, fuel is injected directly into the combustion chamber. The fuel is forced though tiny holes – smaller than the width of a human hair – in the injector tip at high pressure to achieve good evaporation. Dirt that forms and builds up in the fuel injector holes can interfere with this process, restricting fuel flow and leading to an uneven spray which doesn’t burn as efficiently.

As a result your car’s performance may suffer and it may run less effectively with increased fuel consumption. Eventually critical parts of the engine might need repair and dirt could even lead to breakdown.

How does BP Ultimate Unleaded 98 bust dirt?

The advanced formulation of BP Ultimate Unleaded 98 contains millions of molecules that actively drag away this dirt from critical engine parts and carry it through to your combustion chamber where it is harmlessly burnt. In addition, Ultimate’s advanced molecules form a protective coating on the metal surfaces to help stop dirt forming again.

BP Ultimate Unleaded 98 contains BP’s best ever dirt-busting technology and can bust the dirt in your engine in just 2 tanks of fuel.*

What are the benefits of BP Ultimate Unleaded 98 for petrol engines?

BP Ultimate Unleaded 98 is our best ever dirt-busting fuel for petrol engines. It starts fighting the effects of dirt the moment you start your car and is designed, with ongoing use, to:
  • restore and maximise the performance of your engine
  • give you more kilometres per tank
  • give you a smoother drive
  • keep your engine running as the manufacturer intended
  • reduce the risk of unplanned maintenance or break downs
  • protect your engine from sludge
Try BP Ultimate Unleaded 98, busts dirt in just 2 tanks!*
*Based on a vehicle range of at least 650 km per tank.