Hydraulic Fluids
Product Data
castrol.com/GPS
800 255 4417
May 2025
GPS
Castrol
®
Blue Hydraulic Plus
™
Cincinnati Denison Castrol Blue
Lamb Requirements Hydraulic Plus
Requirements HF-0 Oil ISO 32
Grades 32 46 68
Cincinnati Lamb P- 70 Pass - Pass
Pump Test
Denison T5D42 NR Pass Pass
Vane Pump Test
Denison P-46 Series NR Pass Pass
Piston Pump Test
Vickers 35VQ25 NR 23.3 Mg.
Vane Pump Test
(Total Wt. Loss 90 Mg. Max.)
Rust Prevention, ASTM D665
D665A Pass Pass Pass
(Distilled water) Pass Pass Pass
D665B NR Pass Pass
(Synthetic sea water)
Foam Inhibition,
ASTM D892 NR None None
Volume of Foam
aer 10 min.
Denison Filterability (HF-O)
A. Dry NR 600 Max. 51
(sec. to 75 ml)
B. Wet NR 2xA 63
(sec. to 75 ml)
Hydrolytic Stability, D2619
Copper Wt. Loss, NR 0.2 Max. 0.09
mg/cm2
Acidity of Water, NR 4.0 Max. 0.27
mg KOH
1000 Hours Sludge (D-4310)
Insoluble sludge, mg NR 200 Max. 15.8
TAN, mg KOH NR 2.0 Max. 0.09
Copper Appearance 1B
Oxidation Life, ASTM D943
Hours to TAN 2.0 NR 1500 Min. 6000+
Cincinnati Milacron ermal
Stability
Sludge, mg per 25.0 Max. 19.6
100 ml
Copper Rod Rating 5 Max. 2
Steel Rod Rating 1 Max. 1
Cincinnati Milacron Assessment Approved
Special Performance Summery
C22
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