Honda Marine 10W-30 – 4-Stroke Outboard Engine Oil (1L)

Honda Marine 10W-30 4-stroke oil is formulated specifically for the new generation of Honda outboard engines, yet it’s suitable for many other brands requiring similar oil characteristics. As a genuine Honda product, this oil ensures your engine receives the care recommended by the manufacturer. The formulation uses a high-quality base stock and a well-balanced additive package that work together to keep the engine clean and well-lubricated.

The 10W-30 viscosity rating means versatility: the oil is thin enough at low temperatures to flow quickly on startup, preventing “dry” friction, and thick enough at operating temperature to provide a stable protective layer between moving parts. This is especially important for outboard engines, which often operate at varying RPMs – from prolonged idling/trolling at low speed to intense wide-open-throttle runs.

Special detergents and dispersants in the oil keep the engine free of carbon and sludge, which helps maintain full power output and fuel efficiency. Anti-corrosion additives protect the engine when your boat is not in use – for example, during off-season storage – by guarding metal surfaces against rust and oxidation. The oil also has strong shear stability, meaning it retains its viscosity and doesn’t thin out excessively over running hours.

Applications & Recommendations:

• For all Honda 4-stroke outboard engines: This oil is suitable for the entire range – from the tiny Honda BF2.3 (2.3 HP) up to the large V6 models (like BF225, BF250). Using genuine Honda oil helps you adhere to warranty requirements and ensures optimal engine performance.
• Compatible with other brands: It can be used in Yamaha, Suzuki, Mercury, and other outboard motors that call for 10W-30 viscosity and meet API SJ, SL or newer specifications. This is a universal marine engine oil, designed for gasoline (and some small diesel) marine engines, delivering reliable protection in all conditions.
• Available packaging: 1 Liter (easy-pour bottle, perfect for single oil change on one small or mid-sized engine) and 5 Liters (economical jerrycan, convenient for servicing one large engine or multiple changes; reduces cost per liter and ensures you have extra oil on hand). Choose the size based on your needs – 1L for top-ups or small engines, 5L for complete oil change on bigger engines or to have spare for the season. (If 5L is not in stock, five 1L bottles can be used equivalently.)
• Maintenance & intervals: Honda recommends changing the engine oil every 100 hours or once per year (whichever comes first). Under extreme operating conditions (e.g. commercial use or constant high-speed operation), consider more frequent changes – e.g. every 50-75 hours. Always check your oil level before running the engine and top up as needed with the correct type. Use genuine oil filters and adhere to the capacity listed in your engine’s manual (for instance: small engines may need ~0.5-1L, while large V6 engines ~4-5L).
• Eco-friendly & efficient: Thanks to clean burning and reduced friction, this oil contributes to lower exhaust emissions and better fuel economy. You’ll notice smooth and quiet engine operation, responsive throttle, and less smoke on cold start. Additionally, fewer deposits mean longer spark plug life and better performance of any catalytic converter (if your engine is equipped with one).