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Truck & Bus engine oils
Castrol®’s portfolio of high-quality diesel engine oils offers choices to help keep your fleet on the road.

 

Castrol’s diesel engine oils are formulated with excellent base oils and high-quality additives. This combination delivers outstanding performance in three key areas that affect engine oil performance: alkalinity reserve, shear stability, and oxidation stability.

  • Alkalinity reserve is the oil’s ability to neutralize acids that are formed in the crankcase during diesel combustion 
  • Shear stability maintains oil film thickness, which helps to extend engine life by protecting critical moving parts like rings, bearings, and other engine components
  • Oxidation stability minimizes oil degradation, thickening, and deposits and helps enable extended-drain performance

Explore Castrol Diesel Engine Oil Brands to find the lubricant that best suits your fleet’s needs: