Jet Lube Korr-Guard is a water displacing, specialized formula utilizing a unique approach to rust and corrosion prevention. It is a semi-fluid product for ease of application and it is slightly over-based to protect against acid fume and oxidation. Many of the corrosion-resistant greases on the market are petroleum base oils thickened with 3% to 9% soap. The soaps are typically lithium, aluminum and anhydrous calcium and the resulting grease is treated with 2 to 5% rust inhibitor. The rust inhibitor is oil soluble and surface active, wanting to wet out on the steel surface. Over a time, the oil separates and the low additive content depletes. Korr-Guard actually complexes the rust inhibitor in high quantity as a component in the thickener.