Synthetic marine formulation reduces operating friction for increased performance and protection of gears, bearings and other gear case components. Recommended for use in high performance and high load operating conditions in both outboard and I/O lower unit gear cases where a GL-5 class lubricant is required. Sierra Hi-Performance gear lube has been designed to surpass the performance of the OE Hi-Performance gear lubricants…for the finest product available demand Sierra Hi-Performance gear lube.
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