Castrol BioStat ST105|Castrol BioStat ST 150

BioStat ST Range Environmentally Acceptable Stern Tube Oil Description Castrol BioStat ST is an Environmentally Acceptable Lubricant* (EAL) and stern tube oil based on selected synthetic esters and an optimised performance additive system. It provides a very good level of lubrication and corrosion protection, in both fresh and emulsified forms, good oxidation performance and hydrolytic stability. * Castrol BioStat ST complies with current 2018 US Vessel Incidental Discharge Act (VIDA) criteria for Environmentally Acceptable Lubricants (EALs) as it meets 2013 US Vessel General Permit (VGP) biodegradation, bioaccumulation, and toxicity requirements. Application Castrol BioStat ST has been developed primarily for use in stern tubes and combines excellent physical properties that enable both improved lubrication and corrosion protection with an additive system developed to protect stern tube components from wear. Castrol BioStat ST is intended for use in stern tubes, CPP systems and stabilizers. Advantages Good protection against wear and corrosion. Improved oxidation performance, hydrolytic andthermal stability provide extended product life, minimisingconsumption and waste between dry dockings.Emulsifies readily with seawater entering the stern tube to form a stable emulsion, reducing the risk of freewater.Tested and approved by key leading stern tube and seal manufacturers.Compatible and miscible in all proportions with Castrol BioStat.

Typical Characteristics Name Method Units BioStat ST 100 BioStat ST 150 ISO Viscosity Grade ISO 3448 - 100 150 Density @ 15ºC / 59ºF ISO 12185, ASTM D4052 kg/m³ 925 928 Kinematic Viscosity @ 40°C / 104°F ISO 3104, ASTM D445 mm²/s 99 147 Kinematic Viscosity @ 100°C / 212°F ISO 3104, ASTM D445 mm²/s 17.0 22.7 Viscosity Index ISO 2909, ASTM D2270 - 188 184 Pour Point ASTM D5950 °C (°F) -33 (-27) -33 (-27) Flash Point - open cup method ISO 2592, ASTM D92 °C (°F) >230 (>446) >230 (>446) Rust test - synthetic seaw ater (24 hours) ISO 7120, ASTM D665B rating Pass Pass Copper corrosion (3 hours @ 100°C / 212°F) ISO 2160, ASTM D130 rating 1b 1b FZG Gear Scuffing test - A/8.3/90 ISO 14635-1, ASTM D5182 Failure Load Stage 12 12 The above figures are typical of those obtained with normal production tolerance and do not constitute a specification. Additional Information To ensure that performance and environmental properties of BioStat ST are maintained, it is recommended to drain and flush the system thoroughly when changing fluids, but should follow OEM guidelines. Seal compatibility with BioStat ST should be confirmed by the manufacturer prior to changeover. Storage All packages should be stored under cover. Where outside storage is unavoidable drums should be laid horizontally to avoid the possible ingress of water and the obliteration of drum markings. Products should not be stored above 60C, exposed to hot sun or freezing conditions