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Straight-Grade Diesel Oil

Product code : (DO40)

  • Resists engine wear to help maintain compression and horsepower while reducing maintenance
  • Helps reduce oil consumption, reducing the need for frequent top-offs
  • Resists harmful deposits, sludge and acids to maintain engine cleanliness while promoting long component life
  • Suitable for diesel and gasoline engines that require an SAE 40 oil, consolidating inventory

Straight-Grade Diesel Oil

Conventional SAE 40 oil formulated to protect against wear, deposits, acids and oil consumption in older diesel and gasoline engines that require a straight-grade oil. Helps maintain engine cleanliness and efficiency to help reduce maintenance.


  • Formulated to prevent wear to piston rings, cylinders, bearings and other critical components for long engine life.
  • Helps maintain engine compression for maximum power and service life.


  • Resists volatility (burn off) in the presence of elevated heat, reducing oil consumption.
  • Reduces the need to frequently top-off the engine between oil changes, decreasing maintenance and costs.
  • Inhibits oxidation and helps prevent harmful sludge and deposits for maximum cleanliness and long life.

See the Data Sheet for Details

Straight-Grade Diesel Oil

Typical Technical Properties**

SAE Viscosity Grade - SAE 40
Kinematic Viscosity @ 100ºC, cSt ASTM D445 14.5
Kinematic Viscosity @ 40ºC, cSt ASTM D445 130
Viscosity Index ASTM D2270 112
Pour Point ºC (ºF) ASTM D97 -33 (-27)
Flash Point ºC (ºF) (COC) ASTM D92 250 (482)
Zinc, wt% ASTM D4951 0.11
Sulfated ash, wt% ASTM D874 0.8
Total Base Number ASTM D2896 8