LIQUI MOLY Marine Super Diesel Additive - 1L - 6 Pack

LIQUI MOLY Marine Super Diesel Additive cleans and protects marine diesel fuel systems, raising the cetane number for easier starting and improving combustion. It adds lubrication to reduce fuel-pump and injector wear, guards against corrosion and the effects of water in fuel, and is safe for catalytic converters and DPFs. A 500 mL dose treats up to 250 L of diesel. Sold as a case of six 1-liter bottles.

Specifications

Shipping

• In-stock orders placed before 3 PM EST ship the same day — everything else ships within 24 hours.
• Standard, expedited, and overnight options at checkout.
• Oversized items ship by freight and take longer.
• Backordered items ship as soon as stock lands — contact us for lead times.
• International orders: prices do not include VAT, duties, or import fees. Your country charges these at import and they are the buyer’s responsibility.

Returns

• 30-day returns on new, uninstalled items in original packaging with all hardware.
• Standard returns: 8% restocking fee, buyer pays return shipping. Both waived if the item is defective or we made the error.
• Installed or used parts can’t be returned — confirm fitment before you install.
• Special orders and custom items are final sale.
• Email us for return authorization before shipping anything back.

Full details: Shipping Policy · Refund Policy