Sierra 25W-40 oil for Mercruiser engine. Provides excellent lubrication and corrosion protection. Great for sterndrive and inboard engines, the oil offers detergency and antioxidants to reduce wear on internal components, provide cleaner pistons, and prevent ring sticking. Outstanding low temperature operating properties. Includes 1,008 quart-size bottles of oil. Sierra Part #18-9400-2P.
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