Mercury 8M0078628 – 25W‑40 4‑Stroke Marine Engine Oil, 1 Gallon

OEM Mercury Marine 4-stroke oil – trusted protection for outboards, sterndrives, and inboards under all marine conditions.

Product Overview

Mercury 8M0078628 is a premium SAE 25W‑40 marine engine oil designed specifically for 4-stroke marine engines, including outboards, inboards, and sterndrives. This high-performance formula offers exceptional wear protection, rust and corrosion resistance, and long-lasting viscosity retention, even at high RPMs and under load.

Ideal for routine maintenance, it exceeds FC-W and FC-W Catalyst Compatible certification standards and meets all leading marine engine manufacturer requirements.

Key Features

• Formulated for 4-stroke Mercury, MerCruiser, and other marine engines
• 25W‑40 viscosity delivers balanced cold start protection and high-temp stability
• Protects against internal wear, corrosion, and breakdown
• FC-W & FC-W Catalyst Compatible Certified
• Exceeds OEM warranty and performance requirements
• Packaged in a 1-gallon (3.78 L) bottle

Engine Compatibility

• Mercury 4-stroke outboards
• MerCruiser sterndrive & inboard engines
• Compatible with other leading 4-stroke marine engine brands (refer to owner’s manual)
  

Always refer to your engine’s owner’s manual for specific guidance.