The evolution of the lubricants led to the development of many tests, the test of the 4 balls characterizes best quality "extreme pressure" and "anti-wear" of the analyzed lubricant. Thanks to molecular film BARDAHL, lubricating qualities of our products are easily highlighted not these tests:
THE TEST
This test highlights the capacity of the lubricant to avoid wear thus to protect the matèriel and to lengthen its lifespan even under difficult working conditions. 

This graph shows that wear is divided by 8 thanks to molecular film BARDAHL.
This test highlights the capacity of the lubricant to avoid seizing at the time of temporarily elevated loads. Lubricants BARDAHL avoid the rupture of lubricating film thus the break-in of the material. 

This graph shows that the load necessary to seize up is 5 times supèrieure thanks to lubricant BARDAHL.