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Antiwear, antifoam, rust & oxidation resistant hydraulic oil provides excellent service life in closed circulating hydraulic systems.
BLACK BEAR SERIES "R HYDRAULIC OILS are Superior Turbine Quality hydraulic oils designed to significantly  out-perform industry standard hydraulic oils. Formulated from high quality base stocks and double fortified with improved thermally stable performance additives, these oils will ensure long life protection in all types of hydraulic pumps. 
BLACK BEAR SERIES "R" HYDRAULIC OILS' unique super-active additive formulation virtually eliminates the formation of heat related sludging in sensitive electro hydraulic servos associated with conventional zinc type additives. The premium performance additives incorporated in these oils perform exceptionally well even in the finest filtration systems. These oils also exhibit good hydrolytic stability in the presence of water and will not contribute to either the formation of metal etching acids or corrosive reactants. 
BLACK BEAR SERIES "R" HYDRAULIC OILS offer exceptional performance in any high output equipment where sustained heat is prevalent. The double compounding of performance additives give these oils optimum antiwear protection and outstanding ASTM D 943 Turbine Oxidation Test performance (4000+ hours). 


For hydraulic systems where anti-wear, "R & O", and foam resistant oils are specified.
• Vickers I-286-S, M-2950-S
• Racine, variable volume vane pumps - DIN 51524, Part 2 - Jeffrey No. 87 - U.S. Steel 136, 127 - Commercial Hydraulics* 
• General Motors LH-04-1, LH-06-1, LH-15-1 - Denison HF-1, HF-2, HF-0
• Cincinnati Milacron P-68, P-69, P-70 - Lee - Norse 100-1 
• Ford M-6C32 - B.F. Goodich 0152 - AFNOR E 48-603 
• Paper Machines Except for PM-500 series 
* Except for PM-500 series silver containing pumps which require R & 0 only additive systems.

No. 1RNo. 2RNo. 3RNo. 5R
SAE Grade10W10W20W30W
ISO Viscosity Grade 324668100
Gravity, °API31.531.03029.6
Flash Point, °F400420420480
Pour Point, °F-25-25-20-2
Viscosity, SUS @ 100°F 150200300500
Viscosity, SUS @ 210°F 4346.55364
Viscosity Index (V.I.)10010110097
Rust Test ASTM D 665 A,BPassPassPassPass
Oxidation Test, ASTM D 943, Hrs. 4000400040004000
Foam Test ASTM D 892(3 SEQ)0-00-00-00-0
Cincinnati Milacron RequirementP-68P-70P-69
DIN 51524 Part 2 GradeHLP32HLP46HLP68-
Zinc, ppm.500500500500
Vickers 35VQ25 Wgt. Loss / Mg.14141414