Sierra 18-9559CAT-2 10W-40 Full Synthetic Marine Engine Oil - 1 Quart

Sierra 18-9559CAT-2 is a premium full synthetic 10W-40 marine engine oil designed to deliver superior protection and performance in demanding marine environments. This advanced synthetic formula provides excellent wear protection, thermal stability, and oxidation resistance for inboard, sterndrive, and four-stroke outboard engines.

Key Features:

• Full synthetic SAE 10W-40 viscosity grade for optimal flow and protection
• Superior wear protection extends engine life and reduces maintenance
• Excellent thermal stability prevents oil breakdown in high-temperature conditions
• Enhanced oxidation resistance maintains oil integrity during extended use
• Protects against rust and corrosion in marine environments
• Compatible with gasoline marine engines including Mercury, Yamaha, Honda, and others
• Convenient 1-quart bottle for easy oil changes and top-offs

Sierra marine oils meet or exceed the performance requirements of leading marine engine manufacturers, ensuring your engine receives the protection it needs for reliable operation on the water.