ASTRO-CUT 2084 CLF PLUS is a heavy duty BIOSTABLE semi-synthetic high pressure metalworking coolant. ASTRO-CUT 2084 CLF PLUS combines the superior chemical flexibility of synthetics with mineral oil plus phosphorus and active sulfur extreme-pressure additives. ASTRO-CUT 2084 CLF PLUS has exceptional foam control, hard water stability and tramp oil rejection. It provides outstanding extreme-pressure lubricity for machining and grinding virtually all ferrous metals, particularly Stainless Steels and other hard to machine alloys. ASTRO-CUT 2084 CLF PLUS is not recommended for use on Magnesium or copper alloys which might stain.