Avoid Menacing Metal Oxidation (AMMO) - Penny in Acid Test.
This video demonstrates the protecting power of AMMO verse a well-known firearm protectant. One penny is treated with AMMO and another is treated with a well-known firearm protectant. Both pennies are then submerged in acid. The acid eats right through the well-known protectant and quickly corrodes the penny. The penny treated with AMMO emerges virtually unscathed.