At what point does STM-3 break down under heat?
STM-3 does not break down under heat. STM-3 is not a lubricant or an additive that is affected by heat. STM-3 is a metal treatment that is absorbed into the metal and uses oil, lubricant, or grease only to carry it to the metal. In one application, STM-3 will remain stable in excess of temperatures of 2420°F.