Synthetic Hydraulic Oil

Duragard® Diamond Plate® AW-68 High Zinc Hydraulic Fluid

Product Code: DURHZAW68
AVAILABLE IN: 2.5 gal JUG, 5 gal PAIL, 16 gal KEG, 30 gal DRUM, 55gal DRUM, and BULK (in selected areas)

2.5 gal Jug

5 gal Pail

16 gal KEG, 30gal DRUM, 55gal DRUM, and BULK (in selected areas)




Gravity, ºAPI ASTM D287 30.25
Specific Gravity @60ºF (15.6ºC) ASTM D4052 0.8748
Flash Point °C (°F) ASTM D92 213 °C (415 °F)
Viscosity @ 40°C cSt ASTM D445 68.95
Viscosity @ 100°C cSt ASTM D445 10.45
Viscosity Index ASTM D2270 139
Pour Point °C (°F) ASTM D5950 -45ºC (-49ºF)
Color ASTM D1500 0.5
Zinc, wt. % ASTM D5185 0.926
Phosphorus, wt. % ASTM D5185 0.0746
Calcium, wt. % ASTM D5185 0.0068
Sulfur, wt. % ASTM D4951 0.147
Oxidation Hours ASTM D943 6000

Typical test data average values only, minor variations which do not affect product performance are to be expected during normal manufacturing.

Duragard® Diamond Plate® AW-68 High Zinc Hydraulic Oil is a premium quality, HVI-MV Group-II Hydro cracked anti-wear hydraulic oil designed to meet the requirements of fluid power / hydraulic systems. It is formulated with select 100% HVI-MV Group-II Hydro cracked clear base oils that provide superior low temperature fluidity and high temperature film strength that simply cannot be achieved using conventional mineral base oils. The formulation uses a proven anti-wear additive system that is effective in reducing wear in pumps. Duragard® AW-68 also has excellent water separation, rust and corrosion prevention, oxidation stability, and anti-foam properties. The true multi-viscosity, broad temperature feature allows even and continuous power transmission over a wider temperature range with increased accuracy compared to single weight hydraulic oils.

Duragard® Diamond Plate® AW-68 High Zinc Hydraulic Oil meets or exceeds the requirements and is suitable for use in Cincinnati/MAG IAS P-69, Parker Denison HF-0, HF-1, HF-2, Sperry Vickers/Eaton I-286-S, M-2950-S, US Steel 127, 136, DIN 51524, Part 1,2,3, General Motors LS-2, JCMAS HK, and Bosch Rexroth.


  • * Exceptional protection against wear from contaminants and higher operating temperatures and pressures ensures longer equipment life.
  • * Maintains viscosity, even under higher operating temperatures, and has sufficient reserve of key additives, resulting in longer fluid life and reduced operating costs.
  • * Reduced foaming ensures smooth, efficient operation and proper lubrication of all parts in the system.

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WARNING: Products may expose you to chemicals which are known to the State of California to cause cancer and/or birth defects or other reproductive harm. For more information go to
For specific product risks check the manufacturer’s SDS Section 15: Regulatory information.