BP Ultimate is specially designed to lower frictional losses. What does this mean for your engine?
In simple terms, reducing friction in the engine allows more of the fuel energy to be converted to useful mechanical output, thereby improving engine efficiency. In other words, more of the fuel energy gets to where you want it – to the wheels.
Following an extensive development programme, we have incorporated components into BP Ultimate Unleaded specifically designed to lower frictional losses. This means improved performance and better fuel economy from your vehicle.
These friction reducing components are highly “surface active”. Think of the molecules as a head attached to a long tail, as shown in the diagram. The head carries a charge and prefers to be in contact with a metal surface rather than remaining in the bulk of the fuel. As such, these molecules attach themselves to the surface, providing a film between moving metal surfaces and so reducing friction.
The reduced friction benefits from BP Ultimate occur in two different ways. Firstly, there is an immediate benefit through the fuel delivery system: BP Ultimate coats the upper cylinder walls with friction reducing components every time fuel is introduced into the cylinder, meaning that less energy is lost between the piston rings and cylinder walls. This reduction in friction is much more than can be achieved by the lubricant alone. But beyond this, the friction reducing components accumulate in the lubricant over time, so BP Ultimate actually improves the properties of your lubricant as well.
And we can measure the frictional benefits. Using a piece of standard equipment called a High Frequency Reciprocating Rig - or HFRR - and by following a BP proprietary test method we can determine a fuel’s friction reducing properties. These results clearly demonstrate some of the typical frictional benefits seen by us for BP Ultimate Unleaded versus ordinary fuels. We can also measure the beneficial effects on the lubricant.