Sierra Marine 10W-40 Full Synthetic Catalyst Boat Engine Oil

Description

Protect your high-performance boat engine with Sierra Marine 10W-40 Full Synthetic Catalyst Motor Oil, available at The Outdoor Warehouse. Specially formulated to handle the intense demands of modern 4-stroke marine engines, this premium oil provides uncompromised protection in both harsh saltwater and freshwater environments.

Select Your Size Variant:

• 1 Quart Bottle: Part Number 18-9559CAT-2 (Ideal for top-offs and precise filling)
• 1 Gallon Jug: Part Number 18-9559CAT-3 (Perfect for complete routine oil changes)

Product Highlights:

• Catalyst-Safe Formulation: Engineered specifically to be fully compatible with advanced marine engines equipped with catalytic converters, preventing phosphorus depletion and extending catalyst life.
• Premium Full Synthetic Base: Delivers superior thermal stability and excellent oxidation resistance, preventing oil breakdown during continuous high-RPM operations.
• Advanced Anti-Wear Technology: Utilizes a specialized ZDDP additive package to offer industry-leading wear protection and deposit control for critical engine components.
• All-Weather Performance: Formulated as an SAE 10W-40 weight oil to provide excellent engine protection at extreme low and high operating temperatures while resisting excessive thinning.
• Sludge & Corrosion Prevention: Enhanced detergent and dispersant properties block harmful sludge formation and keep the engine internals free from saltwater-induced corrosion.

Engine Fitment & Compatibility:

• Engine Type: High-performance 4-stroke inboard, outboard, cruiser, and towboat marine engines.
• Direct OEM Interchange: Frequently used as a premium replacement for Volvo Penta 21681794 (Quart) and Volvo Penta 21681795 (Gallon) inboard engine oils.

Specifications:

• Brand: Sierra Marine
• Oil Grade: Full Synthetic
• Viscosity Weight: SAE 10W-40

Keep your vessel running at peak efficiency and protect your investment against premature wear. Use the size dropdown to select your volume and order your Sierra 10W-40 marine oil from The Outdoor Warehouse today!