ACDelco Diesel Motor Oil 15W-40

ACDelco 15W-40 Diesel Motor Oil is an advanced, synthetic blend, diesel engine oil that helps extend engine life and delivers high-performance in both on and off-highway applications. The tailored formulation delivers excellent wear and engine protection, extended drain capability, outstanding high-temperature performance and engine cleanliness. 

Applications: Fully backward compatible in both newer and older GM heavy duty engine designs.  Accordingly, this oil meets or exceeds the requirements of API CK-4, CJ-4, CI-4 PLUS, CI-4 service categories.

  • Outstanding oxidation stability
  • Excellent soot and viscosity control
  • Greater engine efficiency, long engine life and long oil life
  • Excellent oil consumption control
  • Lower oil costs due to less make-up oil during operation
  • Corrosion protection and extended drain intervals for both new and old engines
  • Low-temperature fluidity and pumpability
  • Formulated for smooth starting in cold weather
  • Resistance to corrosive and abrasive wear
  • Long life of critical wear surfaces