Fuels pose a special case as lubricants. Due to their low viscosity, they are poor film formers. Thus, wear protection and friction modulation is strongly dependent on the surface-active components and other additives in the fuels.
The wear-protection and friction-modulating properties of fuels can be evaluated by using a high-frequency reciprocating rig test (HFRR; DIN EN ISO 12156-1). A fuel is said to have good lubricity if the diameter of the wear-tracks area is smaller than a critical value; for diesel, the critical HFRR value is 460μm (DIN EN 590).
Download this report to find out more.
Labour pledge to tackle four key barriers in UK energy transition
I'm all for clarity and would welcome anyone who can enlighten me about what Labour's plans are for the size and scale of this Great British Energy....