Shell Tellus S3 M 68 is a premium zinc-free ISO VG 68 hydraulic fluid formulated to deliver long life, excellent wear protection, and sustained efficiency in industrial, marine, and mobile hydraulic systems.

Shell Tellus S3 M 68

Shell Tellus S3 M 68 is a premium zinc-free ISO VG 68 hydraulic fluid formulated to deliver long life, excellent wear protection, and sustained efficiency in industrial, marine, and mobile hydraulic systems.

Shell Tellus S3 M 68


Zinc-free hydraulic fluid for industrial and heavy-duty mobile applications

  • Extended fluid life with ≥5000 hours in ASTM D943 TOST oxidation test

  • Zinc-free anti-wear additives ensure component protection in low to severe duty cycles

  • Maintains performance and filterability even when water-contaminated

  • Delivered with ISO 4406 cleanliness of 21/19/16 or better

  • Excellent water separation, air release, and anti-foam performance

  • Compatible with most hydraulic pumps, seals, and mineral oil systems

  • Environmentally safer profile with low sulfur base oils and low aquatic toxicity

  • Formerly known as Shell Tellus S3 M

Global Product Code: 001D7760



Application:

Shell Tellus S3 M 68 is a high-performance ISO VG 68 zinc-free hydraulic fluid designed for extended fluid life and protection in manufacturing, marine, and mobile hydraulic systems. Its advanced formulation supports system cleanliness and reliability under severe operating conditions. Formerly known as Shell Tellus S3 M.

Performance Features & Benefits:

  • Extended Fluid Life: Minimum 5000-hour lifespan in ASTM D943 TOST test; resists oxidative breakdown from heat and water contamination.
  • Superior Wear Protection: Advanced zinc-free additives offer protection under varied loads; proven effective in Denison T6H and Eaton Vickers 35VQ25 pump tests.
  • Hydraulic Efficiency: Retains filterability and system performance even with water present. Outstanding water separation, air release, and foam control.
  • Cleanliness: Delivered at ISO 4406 21/19/16 or better to reduce abrasive wear and extend filter life.
  • Environmental Performance: Classified as ‘not harmful’ to freshwater and marine invertebrates; low sulfur base oils and zinc-free formulation reduce impact in case of leaks.

Main Application Areas:

  • Industrial manufacturing hydraulic systems
  • Severe-duty hydraulic systems and high-load mobile machinery
  • Marine and mobile hydraulic systems requiring ISO HM fluids

Specifications & Approvals:

  • Denison Hydraulics (HF-0, HF-1, HF-2)
  • Eaton Vickers (Brochure 694)
  • Fives Cincinnati P-69 (ISO 68)
  • ISO 11158 (HM fluids)
  • DIN 51524-2 (HLP oils)
  • ASTM D6158 (HM mineral oils)
  • SS 15 54 34 M

Environmental & Safety Information:

  • Not expected to present health hazards when used properly and with good industrial hygiene.
  • Use impervious gloves when handling used oil. Wash exposed areas with soap and water.
  • Do not discharge into drains, soil, or water. Dispose of at authorized collection points.
  • Safety Data Sheet (SDS) available via inquiry

Technical Specifications:

Property Typical Value Method
ISO Viscosity Grade 68 ISO 3448
ISO Fluid Type HM ISO 6743-4
Kinematic Viscosity @ 0°C 990 cSt ASTM D445
Kinematic Viscosity @ 40°C 68 cSt ASTM D445
Kinematic Viscosity @ 100°C 8.9 cSt ASTM D445
Viscosity Index 105 ISO 2909
Density @ 15°C 870 kg/m³ ISO 12185
Flash Point (COC) 235°C ASTM D92
Pour Point -33°C ISO 3016

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