Availability
Sierra Marine engine oil is available in several formulas to lubricate your outboard or inboard stern drive engines. All supply excellent friction, anti-wear, and corrosion properties to protect your marine engine. Select the engine oil type that is recommended for your specific application needs.
Not Yet Reviewed
$7.99
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$1,489.99
Sierra Marine Catalyst Premium Blend 4-stroke engine oils have been specifically designed to meet the unique requirements of modern 4-stroke recreational engines with or without emission catalyst systems. Features include: * Approved for all 4-stroke applications including outboard, sterndrive, and inboard * Exceeds all 4-stroke requirements including FC-W and FC-W catalyst compatible * Formulated to offer maximum corrosion protection * Advanced lubrication for extended engine life and wear protection * Capitalizing "ZDDP" anti-wear additive technology to prevent phosphorus depletion and extend the emission catalyst life * NMMA FC-W certified
Not Yet Reviewed
$7.99
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$46.99
Sierra Marine FC-W Synthetic Blend Catalyst engine oil is formulated for inboard and sterndrive engines. It is specifically designed to meet the requirements of modern 4-stroke recreational engines with or without emission catalyst systems. Benefits include: * Minimizes corrosion that is formed inside the engine * Displays enhanced detergent and dispersants properties to suspend and prevent engine sludge formation * Industry leading wear protection and deposit control * Prevents excessive thinning under extreme performance operations * Capitalizing on "ZDDP" anti-wear additive technology to prevent phosphorus depletion and extend the emission catalyst life * NMMA FC-W certified/API-SL
Not Yet Reviewed
$11.99
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$42.99
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