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Product DescriptionSierra 80W-90 premium gear lube. Recommended for all general marine applications requiring a GL-5 class lubricant. Ideal for replacing all old hypoid 90 application needs. Formulated for use in freshwater or saltwater conditions. Reduces friction and protections gears, bearings, and other gear case components. Includes 36 5-gallon containers of gear lube. Sierra Part #18-9600-5P.