MARINE LIFE 15 ZNF is a premium zinc-free marine lubricant specifically developed for trunk piston diesel engines used in marine propulsion and auxiliary power systems. The oil is formulated using high-quality base oils and an advanced additive system that provides excellent detergency, oxidation stability, and protection against wear and corrosion.The balanced alkalinity reserve (BN 15) helps neutralize acidic combustion products formed during engine operation, reducing corrosion and extending engine component life. Its zinc-free formulation helps minimize ash deposits and improves piston cleanliness, which is particularly beneficial for engines sensitive to metallic ash formation.