Sierra 18-9440CAT-2 Synthetic Blend Marine Engine Oil 25W-40 FC-W Quart

Sierra 18-9440CAT-2 is a premium synthetic blend 4-cycle marine engine oil specifically formulated to meet the demanding requirements of modern inboard and sterndrive engines. This 25W-40 viscosity oil is designed for recreational marine engines with or without emission catalyst systems, providing superior protection in both freshwater and saltwater environments.

Key Features:

• NMMA FC-W® Certified and API-SL rated for marine engine protection
• Advanced corrosion inhibitors minimize internal engine corrosion from moisture exposure
• Enhanced detergent and dispersant properties suspend contaminants and prevent sludge formation
• Industry-leading wear protection and deposit control technology
• Maintains viscosity stability under extreme operating conditions and high temperatures
• ZDDP anti-wear additive technology prevents phosphorus depletion and extends catalyst life
• Suitable for 4-stroke gasoline inboard and sterndrive marine engines

This synthetic blend formulation delivers the protection of synthetic oil with improved flow characteristics during cold starts while maintaining film strength during high-temperature operation. Ideal for boaters who demand reliable engine protection in all operating conditions.

Note: Sold in case pack quantities only. Each quart bottle provides convenient oil changes for smaller engine capacities or topping off between service intervals.