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  4. Medium speed engine oils

Medium speed engine oils

Learn more about Castrol's marine oils for medium-speed engines, including our TLX and MHP range. Delivering extended engine protection, resistance against oxidation, and excellent engine cleanliness.

Protection for marine engines

New fuel and engine combinations are placing increased stress on lubricants Castrol's complete range of 4-stroke engine lubricants help provide enhanced protection against contamination whilst delivering operational performance.

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Optimal solutions for 4-stroke engines

We understand how critical engine protection is in marine operations. In 4-stroke marine diesel engines, lubricants are constantly exposed to harsh combustion by-products, placing heavy demands on oil performance.

 

Castrol's MHP and TLX ranges are specifically formulated for diesel engines within the marine industry. Our high-performance lubricants deliver excellent viscosity control and strong base number (BN) retention - helping to extend oil life, reduce maintenance intervals, and keep your engines cleaner for longer.

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Castrol TLX

Castrol TLX range for medium speed engines with extended engine protection and excellent engine cleanliness.
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Castrol MHP

Castrol MHP range for medium speed 4 stroke engines with resistance to oxidation and engine cleanliness.

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Marine services

Learn about Castrol's marine services - including scheduling support, condition monitoring, and consultancy solutions to help optimise vessel performance.
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Marine applications

Explore the marine sectors we support, from deep sea to dredgers, ferries, fishing vessels, and offshore operations.
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Marine products

Discover Castrol's marine lubricants and greases, including EALs. Formulated for efficiency, reliability, and fleet productivity.
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DMS

Explore our marine product range and port availability with our Directory of Marine Services.