What Is LIQUI MOLY Marine ATF II/III?

LIQUI MOLY Marine ATF II/III is a synthetic-technology automatic transmission fluid specially developed for marine applications. Designed for compatible marine drives, transmissions and hydraulic systems, it provides reliable lubrication and protection under demanding operating conditions. It is suitable for applications requiring specified ATF performance such as Dexron II D, Dexron II E, Dexron III G, Dexron III H and Dexron TASA.

Marine equipment operates in an environment where moisture, changing temperatures and continuous mechanical loads can affect the performance and service life of transmission components. The correct fluid is important for maintaining reliable hydraulic operation, protecting internal parts and supporting smooth power transmission. LIQUI MOLY Marine ATF is formulated with modern additive technology to provide increased corrosion protection and minimize wear compared with conventional ATF oils.

Specially Developed for Marine Applications

Unlike ordinary automotive ATF products, LIQUI MOLY Marine ATF is specifically developed for the marine sector. It is intended for compatible marine drives and transmissions, including reverse gears, power steering, steering systems, control systems and trim systems.

It can also be used in hydrostatic transmissions and hydraulic or mechanical systems where the equipment manufacturer requires an ATF fluid with the relevant specifications. Its marine-focused formulation provides protection against corrosion and helps maintain dependable lubrication in demanding operating environments.

Dexron II and Dexron III Compatibility

LIQUI MOLY Marine ATF supports a range of established automatic transmission fluid specifications. These include Dexron II D, Dexron II E, Dexron III G, Dexron III H and Dexron TASA (Type A/Suffix A).

These references are useful when checking whether the product matches the fluid requirement of a particular marine transmission or hydraulic system. However, the presence of a Dexron reference does not mean that this fluid is suitable for every automatic transmission or marine application. Always confirm the exact specification required by the equipment manufacturer before use.

LIQUI MOLY also recommends this product for selected applications requiring Allison C4, Mariner, MerCruiser and Mercury fluid references. These recommendations should be checked against the specific equipment model and manufacturer’s service instructions.

Excellent Corrosion Protection

Corrosion protection is especially important in marine equipment because moisture and the surrounding environment can contribute to deterioration of metal components. LIQUI MOLY Marine ATF is formulated to provide excellent corrosion protection, helping protect compatible internal components during operation.

The lubricant’s protective properties support dependable operation and help reduce the risk of wear associated with inadequate lubrication. Correct fluid selection and regular maintenance remain important for keeping marine transmissions and hydraulic systems in good condition.

High Thermal Stability and Resistance to Aging

Marine transmissions and hydraulic systems can experience changing temperatures and demanding operating conditions. LIQUI MOLY Marine ATF offers high thermal stability and optimum resistance to aging.

Its formulation is designed to maintain its protective properties during service, helping provide reliable lubrication under thermal stress. Good resistance to aging is particularly useful in systems where the fluid must maintain consistent performance throughout its recommended service interval.

Wear Protection and Hydraulic Performance

The product is designed to minimize wear and provide excellent protective properties. Proper lubrication helps reduce friction between moving components and supports reliable operation of compatible transmission and hydraulic assemblies.

In hydraulic systems, the correct ATF fluid also contributes to dependable hydraulic function. This makes it important to select a product that matches the equipment manufacturer’s fluid requirement rather than choosing an ATF solely by its general description.

Compatibility with Sealing Materials

LIQUI MOLY states that Marine ATF is compatible with all common sealing materials. Seal compatibility is important because seals help retain fluid and maintain the correct operating pressure in transmission and hydraulic systems.

Using the specified lubricant helps support the proper function of the equipment and its sealing components. Always inspect seals, hoses and connections during routine maintenance, especially in equipment operating under demanding marine conditions.

Suitable Marine Applications

LIQUI MOLY Marine ATF is intended for compatible applications such as:

• Marine reverse gears
• Power steering and steering systems
• Control systems
• Trim systems
• Hydrostatic transmissions
• Hydraulic systems requiring ATF
• Mechanical systems requiring the specified ATF fluid

It is not a substitute for every marine transmission lubricant. In particular, this product must not be used where the equipment manufacturer specifies an API GL4 or GL5 gear oil.

Why Choose LIQUI MOLY Marine ATF II/III?

LIQUI MOLY Marine ATF combines synthetic-technology formulation with modern additive technology to provide corrosion protection, wear reduction and high thermal stability. Its resistance to aging and compatibility with common sealing materials make it a suitable choice for marine equipment requiring the specified ATF performance.

For the best results, verify the exact fluid specification in the equipment manufacturer’s documentation before filling. Using the correct fluid helps support reliable transmission and hydraulic operation and protects compatible components during service.