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

The Mercury Marine 25W‑40 4‑Stroke Synthetic Blend Engine Oil is engineered to deliver strong protection for Mercury outboards and MerCruiser sterndrives operating in demanding marine environments. Its marine‑grade formulation resists thermal breakdown, prevents sludge, and maintains reliable lubrication under high temperatures, heavy loads, and both freshwater and saltwater conditions.

Features

• Advanced 25W‑40 synthetic‑blend formula for 4‑stroke marine engines
• Excellent corrosion protection in saltwater and freshwater
• Helps reduce internal wear and extend engine life
• Maintains viscosity under high heat and heavy load operation
• Prevents sludge and deposit formation for cleaner performance
• Designed specifically for Mercury outboards and MerCruiser sterndrives

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