The salt spray rust test is the best industry standard test to demonstrate a lubricant's ability to protect against rust and corrosion. In this test, lubricant is applied to one-half of a metal chain and the other half is left completely unprotected. The chains are then exposed to consistent and aggressive salt moisture for a 24-hour period. Check out how Tri-Flow® Lubricants stack up against the competition - Competitor W, Competitor P and Competitor F - . Of course, this test is an extreme example and unless you live by the ocean, your equipment probably won't be subjected to the same type of abuse. But if you expose your equipment to the harshest conditions, which lubricant would you trust to protect it against rust and corrosion.