The Mercury 4‑Stroke 25W‑40 Motor Oil was specially developed to meet the high demands of modern marine inboard and Z-drives. This high-quality mineral multi-grade oil provides maximum stability even under extreme stress and ensures reliable lubrication in all operating conditions. Whether for a powerful gasoline engine or a robust diesel engine – this oil is perfectly tailored to the harsh conditions of marine use.

The unique formula is designed to prevent the thermal breakdown of the molecular structure. Even at high temperatures, under heavy loads and during extended operating periods, the protective effect remains stable. Since no additional viscosity improvers are necessary, the oil structure remains resilient and consistently high-performing throughout its entire service life.

Thanks to its excellent lubricating properties, Mercury 25W‑40 reliably protects against corrosion, wear, abrasion, and deposits. This extends the service life of sensitive internal engine parts and supports smooth, clean, and efficient engine operation.

This oil is extensively field-tested and has proven itself in both gasoline and diesel engines. The formulation meets and exceeds the API Service requirements SJ, CF‑2, and CH‑4, thus guaranteeing genuine marine quality for demanding engines.

Ideally suited for:

• Mercury and MerCruiser engines
• Inboard and Z-drives
• Gasoline and diesel engines
• High-performance 4-stroke outboards