Hydraulic Fluids
Product Data
castrol.com/GPS
800 255 4417
May 2025
GPS
Castrol
®
Performance
™
Bio HE
Typical Analysis
Product Appearance Clear Green Fluid
Odor Bland
Application Environmentally friendly hydraulic fluid with
similar mineral oil level performance.
Performance Method Units Typical Results
Profile Test
Viscosity @40°C ASTM D445 cSt 37
Viscosity @100°C ASTM D445 cSt 8.5
Viscosity Index ASTM D2270 200
Pour Point ASTM D97 °F -25 (-13)
Flash Point ASTM D92 °C (°F) 285°C (545 °F)
Demulsification ASTM D1401 mins 20
Rust Test ASTM D665A No Rust
Rust Test ASTM D665B No Rust
Copper Corrosion, 3 hrs at 100°C ASTM D130 1b
FZG Gear Test, Pass Stage Din 51354 11
4-Ball Wear Test, 1 hr, 30kg, 1460 rpm MWSD mm 0.4
Vickers Vane, weight loss ASTM D2882 < 5 mg
Biodegradability CEC-L-33-T-82 % 95
C36
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