Coefficient of Friction is measured by an industry standard test called the Four Ball Wear Test.
The procedure for this test is very straight forward. Three steel balls are positioned so that they are all touching, and then they are clamped together. A fourth ball is positioned on top of those balls resting in the cavity formed in the center, and secured so that there is constant contact between all four balls. The top ball is then rotated at 1200 rpm for 60 minutes. During this time, heat and friction are measured; once a baseline has been established, product is added to evaluate its effectiveness in reducing this heat and friction.
The goal for this test is to have the lowest coefficient of friction possible. A coefficient of zero indicates a friction free environment, and frictionless planes do not exist in the real world. In the Winter of 2012, XG Industries had its products tested at Petro-lube facilities in Lafayette, New Jersey. The test used a popular motor oil as a control, and the coefficient of friction with the motor oil was .082, which is below that of most other motor oils, Then, the same test was run again with XG 100, our nanoparticle infused engine oil treatment added to the motor oil. Within the 60 minute test cycle, the Coefficient of Friction dropped to .017, which is the lowest measure we could find in scientific literature.