Test and calibration fuels are well defined high performance fuels, manufactured to exacting tolerances that allow manufacturers to measure and test a whole range of performance parameters.
Precision, consistency and reliability in fuel formulations is vital to ensure the accuracy of data that we get. In turn, this requires the highest quality fuel refining and blending technology.
Manufacturers need lots of different fuels to support their research and development programs. Special fuels are also needed for durability tests to establish mpg figures or to provide other reference data.