The Lubriplate® SYN “1600\" series of synthetic high performance greases are 100% synthetic products. They are not synthetic blend greases. This produces far superior oxidation stability, better wear protection and significantly better operating temperature ranges. Manufactured with 100% polyalphaolefin (PAO) base fluids and thickened with lithium-complex, the Lubriplate® SYN “1600\" series greases are compatible with conventional lithium-thickened, mineral oil based greases. The Lubriplate® SYN “1600\" series greases are fortified with additives to prevent rust and corrosion and to reduce grease bleed. Lubriplate® Multi-Purpose Grease, High Performance, Series: SYN-1600, Keg, 120 lb, Synthetic PAO Base, Composition: Zinc Oxide, Antimony Tris, Tris, Zinc Bis, Solid, Off-White, Odor/Scent: Mineral Oil, -40 to 380 °F, 0.96 Specific Gravity, 500 to 503.6 °F Flash, 218 cSt at 104 °F Viscosity, Flammability: 1, Grade NLGI 0