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  5. Castrol launches BioTrans GB

Castrol launches BioTrans GB

Castrol has launched BioTrans GB, a new lubricant range for use in thrusters, some controllable pitch propeller (CPP) systems and deck machinery.

Pangbourne, UK, 19 November 2025

Castrol launches BioTrans GB

 

Castrol, a global leader in lubricants, has launched Castrol BioTrans GB, a new lubricant for use in thrusters, some controllable pitch propeller (CPP) systems and deck machinery.  

 

Castrol BioTrans GB is an Environmentally Acceptable Lubricant (EAL)1 that complies with the current US Vessel Incidental Discharge Act (VIDA)2 criteria.  

 

Castrol BioTrans GB is an extreme pressure (EP) and demulsifying gear oil range developed with fully saturated synthetic esters and a specially selected additive technology. As a result of this formulation, it protects gears, even when subjected to high loads, offers lubrication and corrosion protection, with strong oxidation performance and hydrolytic and thermal stability. 

 

Castrol BioTrans GB offers good compatibility with common elastomer materials including Nitrile and FKM. It has proven performance under extreme operating conditions such as temperatures ranging from -25ºC (-13ºF) to +100ºC (212ºF). The formulation is engineered to manage seawater ingress to ensure it resists hydrolytic degradation and maintains performance.  

 

The development of Castrol BioTrans GB reflects our long-standing commitment to supporting customers in the face of increasing regulatory and operational complexities. Whether navigating VIDA requirements or seeking to update their lubricant performance, this high-performance, technically advanced product has been developed to help our customers extend performance and protect critical equipment in the harshest environments.Eda GökayGlobal Marine and Energy Marketing Manager, Castrol

 

As regulations continue to evolve globally, shipowners and operators need products that are ready to meet the demanding global environmental legislation challenges. Castrol BioTrans GB reflects our proactive approach. It’s a solution that supports both operational integrity and environmental accountability, giving customers greater confidence in their fleet’s long-term readiness.Kat ColvinSenior Environmental Toxicologist, Castrol

 

BioTrans GB is compatible and miscible in all proportions with Castrol BioStat3 and is part of the broader Castrol Bio Range. The product has been tested and approved by several leading thrusters and manufacturers. 

 

Notes to Editors

1  Castrol BioTrans GB meets 2013 US Vessel General Permit (VGP) biodegradation, bioaccumulation, and toxicity requirements and while we await the implementation guidelines for VIDA 2018.

2 A lubricant, including any oil or grease, that is "biodegradable", "minimally toxic" and "not bio accumulative" as defined by the United States Vessel General Permit 2013 regulations.

3 The demulsifying properties of BioTrans GB will be impacted if mixed with BioStat.

 

About Castrol 
Castrol, one of the world’s leading lubricant brands, has a proud heritage of innovation and fuelling the dreams of pioneers. Our passion for performance, combined with a philosophy of working in partnership, has enabled Castrol to develop lubricants and greases that have been at the heart of numerous technological feats on land, air, sea, and space for over 125 years.

 

Today, Castrol is focusing on sustainability through its PATH360 strategy that sets out aims to help save waste, reduce carbon, and improve lives. 

 

Castrol is part of the bp group and serves customers and consumers in the automotive, marine, industrial and energy sectors. Our branded products are recognized globally for innovation and high performance through our commitment to premium quality and cutting-edge technology.  

 

For more information, please visit: www.castrol.com