BIOSTAT 150

Castrol BioStat environmentally acceptable lubricants are specifically designed to replace conventional lubricants in the stern tube bearings and thruster gearboxes of ships. Small quantities of lubricant can be discharged into the marine environment in the course of normal operation of vessels, but the cumulative amount for all vessels is very large. Larger quantities of oil may be released under fault conditions.
Castrol BioStat lubricants are formulated from synthetic ester base oils which are selected to give a wide operating temperature range and long service life.
Castrol BioStat lubricants have been tested and registered according to OSPAR (Oslo and Paris Convention for the Protection of the Marine Environment of the North-East Atlantic) requirements and therefore meet the definition of an Environmentally Acceptable Lubricant (EAL) under the US Vessel General Permit for Discharges Incidental to the Normal Operation of Vessels (VGP) 2013.