1 Litre  ROCK OIL 

MARINE HSF

Marine Hydraulic Steering Fluid / Oil 

Rock Oil  British Manufacturer of High Quality Lubricants and fuels 


Will fit all steering systems 

SSI MARINE


HLP 10 Hydraulic Oil is suitable for most hydraulic systems where high levels of anti-wear and protection are required in conjunction with good service life reliability. 

It is also suitable for a wide range of other applications where machinery lubricants with excellent anti-wear lubrication and resistance to degradation in service are required. 

Applications can include systems incorporating high speed gears and bearings, pumps, blowers and other uses where this type and quality of lubricant can assist with lubricants rationalisation. 

The HLP 10 Hydraulic Oil is formulated using extremely high quality base oils and incorporates additive treatments to provide excellent service life with protection against corrosion, wear, oxidation and foaming.

Over 2000 Hour TOST life, twice the life of many conventional mineral oil based hydraulic fluids

Outstanding cleanliness and purity, guaranteed ISO cleanliness rating of 21/19/16 or better

Excellent protection of machinery and systems against corrosion and wear

Excellent service life associated with excellent resistance to oxidation and thermal degradation

Excellent anti-foam and de-aeration performance

Compatible and miscible in storage and in service with most other mineral oils

Good filter ability for use in conjunction with most hydraulic and lubricating oil system filters


If you have any concerns regarding the suitability of the item please ask before purchase.

If the part looks the same like yours is not always the right one for your outboards so please double check.

Rock Oil is a British Manufacturer of High Quality Lubricants and fuels 

Established in 1928, Rock Oil supply high quality lubricants and fuels for all markets. Our products are manufactured from the finest state of the art synthetic chemicals and oils; they meet and surpass all relevant national and international standards.

Marine Lubricants Range

Rock Oil's vast experience in both 2 and 4 stroke lubrication has been used to produce our high performing range of marine lubricants for both inboard and outboard applications.

The MP 3 Ultra, MP3 Sport and MP+ Sport lubricants have the prestigious NMMA accreditation which is testament to their quality. It is the foremost specification for the marine industry and assures the user that the products meet and exceed exacting standard