LIQUI MOLY
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LIQUI MOLY Marine supplies the highest-quality lubricants and additives for recreational boating and commercial use in Europe. The owner benefits from decades of experience and the expertise of knowledgeable engineers and continuous technical innovations.

Liqui Moly Additives, Lubricants & Oils for the Marine Sector

Welcome to the World of LIQUI MOLY

The complete care-free package for boat engines and outboards

LIQUI MOLY offer
Motor oils
  • For 4-stroke / 2-stroke engines
  • Maximum protection against corrosion & wear
  • NMMA FC-W and TC-W3 approval
  • Special 4-stroke marine oils
    • Marine 4T motor oil 10W-30
    • Marine 4T motor oil 15W-40
    • Marine 4T motor oil 25W-40
  • Special 2-stroke marine oils
    • Marine 2T motor oil
    • Marine 2T DFI motor oil
LIQUI MOLY
Marine interior engine preserver
  • For all 4 and 2 stroke engines
  • Compatible with all engine oils
  • Long-term protection against rust and corrosion
  • High reliability
  • Easy to use
LIQUI MOLY
Marine multi-spray
  • Versatile multifunction spray
  • Protection against corrosion and oxidation
  • Displaces moisture
  • Loosens rusted screws
  • Optimal lubrication with PTFE
LIQUI MOLY
Marine grease
  • For all lubrication points
  • Completely seawater resistant
  • Resistant to hot water
  • Stable to ageing and liquefying
LIQUI MOLY
Transmission/Hydraulics
  • For hydraulic and mechanical systems
  • For drives and transmissions, such as: reversing gears, power steering systems, control systems, trimming systems, hydrostatic transmissions.
  • Marine transmission oil 80W-90
  • SAE30 engine and transmission oil
  • ATF marine gear oil
LIQUI MOLY
Special additives
  • Corrosion protection / oxidation protection
  • Protects against bacterial contamination
  • Remedy for bacterial contamination
  • Optimises engine performance
  • Reduces emissions
  • For decommissioning over winter

What are additives for?

For better starting and overall performance

Additives are extra substances that are added to oil or fuel in small quantities. LIQUI MOLY additives are specially formulated to improve performance, combat problems and protect against them. LIQUI MOLY Marine Diesel Protection, for example, offers a high level of efficiency in combating bacteria, yeasts and molds and disinfects diesel tank systems affected by bacterial contamination. The cleaning components contained in the product ensure the optimum cleanliness of the entire fuel system. The additional corrosion protection safeguards metallic components perfectly. The cetane booster ensures easy starting after the engine is taken out of storage. The highest possible engine performance is guaranteed. Always pay attention to the correct dosage when using additives, as the optimum effect is only guaranteed with the correct mixing ratio.

Free as part of a set
LIQUI MOLY offer
Super diesel additive
  • Cleans the fuel system
  • Keeps injectors clean
  • Increases the cetan number
  • Optimises engine performance
  • Lowers fuel consumption
  • Reduces emissions
Marine desel protection
  • Sterilises infected tank systems
  • Prevents bacteria from forming
  • Cleans the fuel system
  • Protects against corrosion
Marine petrol system cleaner
  • Removes deposits in the whole fuel system
  • Improves engine performance
  • Eliminates starting difficulties
  • Lowers fuel consumption
  • Reduces emissions
Marine fuel stabiliser
  • Protects against oxidation and ageing
  • Prevents corrosion in the fuel system
  • Ensures a trouble-free shutdown

Diesel pest: small organisms, big problems

Additives tested - what do they really do?
Two control samples were created for the test. One sample a mixture of diesel fuel WITHOUT additive and 0.5% water, the other diesel fuel WITH additive and 0.5% water. Both mixtures were exposed to three microorganisms (bacteria, yeast and fungi).
After an incubation period of 21 days, we analysed how many microorganisms were killed, if any, or whether there was an increase. In the sample WITHOUT additives, organisms spread rapidly, in the mixture WITH additives, after just 7 days there were no more detectable microorganisms. After 21 days, no more microorganisms appeared.
We therefore recommend the highly effective Marine Diesel Protection from LIQUI MOLY.

LIQUI MOLY Additive im Test

Left: WITHOUT ADDITIVE, Right: WITH ADDITIVE

LIQUI MOLY Additive im Test

Product presentation: High Performance Transmission Oil 85W-90

LIQUI MOLY offer

Water in the transmission? New development especially for Mercury outboard motors provides remedy

Boat engines face a problem that vehicles on land do not: Water in the transmission. If the engine is left standing for a longer period of time, water separates from the transmission oil and settles. This water layer can then cause corrosion, which leads to transmission problems and shortens its service life. LIQUI MOLY's Marine High Performance Transmission Oil 85W-90 offers significantly better emulsifying properties than conventional transmission oils, while maintaining its lubricating capabilities. 85W-90 keeps the water dissolved in the oil so that it cannot settle. Despite the dissolved water contained therein, the transmission is reliably lubricated.

Boat engines face a problem that vehicles on land do not: Water in the transmission. If the engine is left standing for a longer period of time, water separates from the transmission oil and settles. This water layer can then cause corrosion, which leads to transmission problems and shortens its service life. LIQUI MOLY's Marine High Performance Transmission Oil 85W-90 offers significantly better emulsifying properties than conventional transmission oils, while maintaining its lubricating capabilities. 85W-90 keeps the water dissolved in the oil so that it cannot settle. Despite the dissolved water contained therein, the transmission is reliably lubricated.