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IT'S MORE THAN JUST OIL. IT'S LIQUID ENGINEERING.

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  3. DIESEL ENGINE OILS
  4. DIESEL ENGINE OIL BRANDS
  5. CASTROL ASSURON

CASTROL ASSURON

Castrol® Assuron™ is a line of heavy-duty, monograde diesel engine oils
 

Castrol Assuron (SAE 10W, 30, 40, and 50) is a line of heavy-duty, monograde diesel engine oils that couple select base stocks with a carefully balanced additive package.

 

  • Castrol Assuron has proven performance in various on- and off-highway heavy-duty diesel engines, particularly in applications requiring API CF-2
  • Castrol Assuron is extremely resistant to the formation of high-temperature deposits; its dispersant package also works to keep the cooler areas of the engine from sludge and other harmful deposits
  • Enhances engine performance
  • Protects engine parts for extended life
  • Reduces maintenance costs
Castrol Assuron 10W
Castrol Assuron 30
Castrol Assuron 40
Castrol Assuron 50
Castrol Assuron 10W

Castrol Assuron 10W

Castrol Assuron Industry Specifications and OEM Approvals

Castrol Assuron 10W meets or exceeds the requirements of the following API categories:

  • CF
Castrol Assuron 30

Castrol Assuron 30

Castrol Assuron Industry Specifications and OEM Approvals

Castrol Assuron 30 meets or exceeds the requirements of the following API categories:

  • CF-2
  • CF
Castrol Assuron 40

Castrol Assuron 40

Castrol Assuron Industry Specifications and OEM Approvals

Castrol Assuron 40 meets or exceeds the requirements of the following API categories:

  • CF-2
  • CF
Castrol Assuron 50

Castrol Assuron 50

Castrol Assuron Industry Specifications and OEM Approvals

Castrol Assuron 50 meets or exceeds the requirements of the following API categories:

  • CF-2
  • CF