Purpose and Specifications

The LIQUI MOLY Marine Super Diesel Additive (25007) is a powerful 1-liter formula designed to clean and protect your marine diesel engine's fuel system. It boosts cetane for smoother starts, better combustion, and lower emissions while preventing rust, corrosion, and wear on pumps and injectors. This additive increases lubrication to cut friction, keeps nozzles clean from gumming, and stops deposit buildup for reliable performance and fuel savings.

• One 1L bottle treats up to 500 liters of diesel fuel (1:500 ratio) - perfect for boats with pumped-jet or common rail systems.
• Safe for turbochargers, catalytic converters, DPF filters, biodiesel, and HVO fuels.
• Works in all temps your engine runs, from cold starts to hot cruises.
• Shelf life: Up to 3-5 years stored cool and dry.

When to Use / Replace?

Add directly to your fuel tank with every fill-up for ongoing protection - effects last through normal boating seasons or up to 2,000 km of operation. Use if you notice hard starting, rough idling, or rising fuel use. No fixed replacement interval; refresh every tank for peak efficiency, especially in humid marine conditions where water contamination risks fuel issues.

Frequently Asked Questions

Q: How much do I add per tank?
A: Use 1 liter for 500 liters of fuel. For smaller tanks, 500 ml handles 250 liters - simple and precise.

Q: Is it safe for my modern diesel boat engine?
A: Yes, fully compatible with common rail, turbo, DPF, and biodiesel - no harm to emissions gear.

Q: Can I use it year-round?
A: Absolutely, ideal for continuous use to maintain clean fuel systems and prevent winter storage problems.