Synthetic Blend Full Engine Oil

Duragard® SAE 50WT Heavy Duty Single Grade Engine & Transmission Oil

Product Code: DUR40XX
AVAILABLE IN: 2.5 gal JUG, 5 gal PAIL, 16 gal KEG, 30 gal DRUM, 55gal DRUM, and BULK (in selected areas)




Calcium, wt. % ASTM D5185 0.346
Color ASTM D1500 5.5
Gravity, °API ASTM D287 26.62
Phosphorus, wt. % ASTM D5185 0.116
Specific Gravity @60°F (15.6°C) ASTM D4052 0.8949
TBN, mgKOH/g ASTM D2896 7.5
Viscosity @ 40°C cSt ASTM D445 212.6
Viscosity @ 100°C cSt ASTM D445 18.77
Viscosity Index ASTM D2270 98
Zinc, wt. % ASTM D5185 0.132
Typical test data average values only, minor variations which do not affect product performance are to be expected during normal manufacturing.

Duragard® SAE 50WT Single Grade Heavy Duty Engine & Transmission Oil is specially formulated with a select High Viscosity Index (HVI) Group-II Hydro-cracked base oils combined with potent detergent dispersants, anti-wear additives, anti-oxidants, defoamers, and pour point depressant compounds that provide superior low temperature fluidity and extraordinary high temperature film strength that simply can not be achieved using conventional mineral based oils.

Duragard® SAE 50WT Single Grade Heavy Duty Engine & Transmission Oil meets the requirements of CF-4/SG. Suitable applications include specialty vehicles, older diesel engines, tractors, buses, marine, power generation, excavators, power dozers and mining equipment that require a high quality single grade 50WT oil.


  • * Meets CF-4/SG.
  • * Reduces deposits of sludge, varnish and carbon on engine parts.
  • * Superior low temperature fluidity..
  • * Provides excellent high film strength properties under high temperatures.
  • * Outstanding oil performance under harsher conditions.
  • * Suitable for heavy equipment used for construction, mining or quarry operations, and farming.

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