Castrol BioStat ST
Environmentally Acceptable Lubricant* for stern tubes with very good level of lubrication and corrosion protection, good oxidation and hydrolytic stability.
Castrol BioStat ST
The Castrol Bio Range oil for stern tubes that meets the requirements of Environmentally Acceptable Lubricants* (EALs), based on selected synthetic esters and an optimised performance additive system.
BioStat ST Launch
What it’s for
- Developed primarily for use in stern tubes, Controllable Pitch Propeller (CPP) systems and stabilizers.
Why you need it
Complies with current 2018 US Vessel Incidental Discharge Act (VIDA) criteria.
Tested and approved by key leading stern tube and seal manufacturers.
Very good level of lubrication, and corrosion and wear protection, good oxidation performance and hydrolytic stability.
Castrol bio range of lubricants are carbon neutral in accordance with BSI 2060 from 2021.**
Environmentally acceptable lubricant (EAL)*
- Meets the definition of an EAL* under the 2018 US VIDA based on the requirements of 2013 US Vessel General Permit (VGP) biodegradation, bioaccumulation and toxicity requirements.
- Reduced environmental impact when compared with conventional mineral oil-based greases.
Reliability
High specification stern tube oil based on selected synthetic esters and an optimised performance additive system
- Tested and approved by key leading stern tube and seal manufacturers.
- Good protection against wear and corrosion.
- Improved oxidation, hydrolytic and thermal stability provides extended product life.
- Emulsifies readily with sea water entering the stern tube to form a stable emulsion, reducing the risk of free water.