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The BLACK BEAR AW ASHLESS SERIES are highly refined ashless anti-wear hydraulic oils, developed to meet the requirements of high pressure hydraulic systems. These zinc-free oils are designed for use in vane, rotary, gear pumps, and compressors, along with circulating systems and machine tools. These oils are characterized by outstanding performance in preventing rust, oxidation, foaming, air entrainment and many other factors that occur in hydraulic systems. This fluid is non toxic and recommended for applications where the use of oils containing toxic heavy metals is restricted because of soil or water contamination. The additive system in these oils is approved as meeting the requirements of pump manufacturers and machine tool builders. These products have good oxidation resistance, detergency properties, rust and corrosion protection, as well as resistance to foaming. The unique additives used in our AW ASHLESS SERIES also allows for better detergency properties that prevent varnish buildup in sophisticated systems.

4242 Safety Data Sheet

4652 Safety Data Sheet

4662 Safety Data Sheet

4252 Safety Data Sheet

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SKU: 4662,4652,4242,4252 Category: Tags: ,



– Ashless antiweaR – Rust and corrosion protection – Product versatility – Anti-foam – Excellent oxidation properties – High temperature stability


This product is designed primarily for use in hydraulic systems located near environmentally friendly areas such as national parks, wildlife refuges and ski resorts.


BLACK BEAR AW ASHLESS HYDRAULIC OILS meet or exceed the following specifications Dennison HF-0, HF-1, HF-2, Vickers M-2950-S, I-286-S, Cincinnati Milacron P-68, P-69, P-70; DIN 51524 PART 2, GM LH-04-1, LH-06-1, LH-15-1, Rexroth, Sundstrand, Towler, US Steel 127, 136, ISO 11158:1997, German Steel Industry SEB 181222

PRODUCT CODES 4662 4652 4242 4252
ISO Grade 32 46 68 100
API Gravity 31.5 31.5 31.0 30.5
Viscosity, cSt/40°C 32 46 68 100
Viscosity, cSt/100°C 5.2 6.9 8.9 10.8
Viscosity Index 100 99 98 96
Oxidation Stability 5000 5000 5000 4000
Remissability (D1401), min 20 20 20 20
FZG Pass, Load Stage 10 10 10 10
Rust (D665 A&B) Pass Pass Pass Pass
Flash Point, COC °F 425 446 475 485
Pour Point ° C (D97) -30 -27 -20 -18
Biodegradability in 28 days, OECD 301-B% 22 22 22 NA