Mercury Marine 4-Stroke Engine Oil 25W-40 Synthetic Blend

The Mercury Marine 25W‑40 4‑Stroke Synthetic Blend Engine Oil (4L) is engineered to protect Mercury outboards and MerCruiser sterndrives from extreme heat, moisture, and high‑RPM operation in demanding marine environments. Its durable synthetic‑blend formula delivers strong wear protection, corrosion resistance, and sludge control to help maintain peak performance in both freshwater and saltwater conditions.

Features

• Advanced 25W‑40 synthetic‑blend formulation for 4‑stroke marine engines
• Superior corrosion protection in saltwater and freshwater
• Helps reduce internal wear and extend engine life
• Maintains viscosity under high temperature and heavy load
• Protects against sludge and deposit formation
• Designed specifically for Mercury outboard and MerCruiser sterndrive engines
• 4L volume

Product availability varies between locations, and some products are only available online. Please contact your nearest Martin Motor Sports here for availability.