Skip to content
High-performance oil designed for modern marine engines and conditions.
Sierra Marine Premium Blend 4-Stroke Catalyst Engine Oil is formulated to meet the rigorous demands of high horsepower marine engines. This SAE 10W-30 oil is suitable for various 4-stroke applications, including outboard, sterndrive, and inboard engines, ensuring compatibility with both emission catalyst systems and non-catalyst systems. The oil provides superior corrosion protection, making it ideal for use in harsh marine environments where exposure to saltwater and extreme conditions is common.
This engine oil exceeds all requirements for 4-stroke engines, including NMMA FC-W and FC-W Cat compatibility, ensuring optimal performance and longevity. It incorporates advanced ZDDP anti-wear additive technology, which helps prevent wear and extends the life of emission catalysts by reducing phosphorous depletion. With industry-leading wear protection and deposit control, Sierra Marine engine oil is engineered to enhance engine efficiency and reliability, making it a trusted choice for marine applications.
Features
- Meets Requirements Of Modern 4-Stroke Recreational Engines With Or Without Emission Catalyst Systems
- Approved For All 4-Stroke Applications Including Outboard, Sterndrive And Inboard
- Exceeds All 4-Stroke Requirements Including FC-W And FC-W Cat Compatible
- Provides Superior Corrosion Protection Under Extreme Conditions
- Industry Leading Wear Protection And Deposit Control
- Capitalizing On "ZDDP" Anti-Wear Additive Technology
- Prevents Phosphorous Depletion And Extends The Emission Catalyst Life
- NMMA FC-W Certified And API-SL
Specifications
- Manufacturer: Sierra Marine
- Manufacturer Part Number: 18-9420CAT-3
- Use: Marine Use
- Engine Type: 4 Stroke
- Viscosity Grade: SAE 10W-30
- Type: Conventional
- Unit Size: 1 Gallon
- Unit Quantity: Single
- Universality: Semi-Universal
- Unit Type: Jug
Technical Documents
Product Videos
Shipping & Returns
- This product ships within the continental USA only.
- This product typically ships within 1 to 3 business days.
This item is NOT returnable. For complete details, please see our return policy.
