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Energol THN 77


Turbine Oil – Mil Spec Approved


Sold in Qt, Gal, 5 gal pail, and 55 Gal drums


Energol THN 77 is a high quality steam turbine oil uniquely formulated for use on naval surface vessels and submarines. The product meets specific performance requirements as per the mil standard and passes all health and safety assessments as required by the U.S. Navy.

Energol 77

Energol THN 77 is recommended for use in main steam turbine bearings and reduction gears, as well as auxiliary turbines, certain hydraulic equipment, air compressors and general mechanical lubrication on naval surface vessels and submarines.

Main Performance Features
· Does not contain phenolic anti-oxidants:
· Chlorine and zinc free.
· Excellent demulsibility.
· Rust Inhibited.
· High level of gear lubrication performance (FZG stage 10).
· High thermal and oxidation stability to prolong service life.
· Good anti-foam and air release properties. 

Energol THN 77 is fully approved by the U.S. Navy and has been tested against U.S. Mil Spec, and Energol THN 77 may also be identified as Nato Symbol O-250, and Military Symbol 2190-TEP.

Care and Handling
It is recommended that when Energol THN 77 is used as a steam turbine oil, it is continuously centrifuged and filtered in accordance with the manufacturers’ instructions.

Packaging and Storage
Supplied in bulk, and drums of approximately 208 litres. Where outdoor storage is unavoidable, drums should be covered. The drums should be stored in such a way as to ensure they are not damaged and grade markings not obliterated; position them horizontally so as to prevent water collecting on drum ends. Ensure drums are tightly re-sealed after use.

BP Energol THN 77 Health, Safety and Environment
Health, safety and environmental information is provided for this product in the Material Safety Data Sheet. This gives details of potential hazards, precautions and First Aid measures, together with environmental effects and disposal of used products. The British Petroleum Company plc or its subsidiaries will not accept liability if the product is used other than in the manner or with the precautions or for the purpose/s specified. Before the product is used other than as directed, advice should be obtained from the local BP office.