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

Mercury Marine 25W‑40 4‑Stroke Engine Oil is a premium multi‑viscosity formula blended with high‑grade base oils and engineered specifically for 4‑cycle outboard, sterndrive, and inboard engines. Designed to outperform automotive oils in harsh marine environments, it delivers exceptional wear protection, corrosion resistance, and thermal stability under extreme RPM, temperature, and load conditions.

Features

• 25W‑40 multi‑viscosity marine‑grade formulation
• Superior corrosion protection for marine environments
• Most recommended OEM oil for Mercury engines
• Outperforms automotive oils in marine applications
• Provides outstanding wear protection to extend engine life
• Maintains peak performance and reliability under extreme heat and load
• Prevents thermal breakdown at high RPM
• Exceeds FC‑W and Catalyst Compatible requirements for all marine engine manufacturers
• 4L volume
  

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