Gold mine had been having problems keeping cooling tower gearboxes at acceptable temperature levels.  Temperature on 5 gearboxes was 58 degrees C standing in open air.  In an open space, the weather plays a big role.  They treated the gearboxes with AFMT after which the temperature dropped to 43 degrees C.  By using Prolong in these 5 gearboxes and all 5 showing a temperature drop of 15 degrees C, this showed conclusive evidence that Prolong took away the friction in the gearboxes, which resulted in a 35% drop in temperature.
G. Schultz, Foreman, Kloof Gold Mine, Africa