Castrol CRB Turbomax 10W-40 E4/E7 with DuraShield BoostersTM is an advanced heavy duty diesel engine oil for use in highly rated diesel engines meeting Euro I to Euro V emission requirements. It is suitable for engines without particulate filters, for some EGR engines and some engines fitted with SCR NOx reduction systems.



  • Delivers up to 40% better wear protection* for long and healthy engine life.
  • Helps to prevent the agglomeration of soot under severe operating conditions, protecting surfaces from wear.
  • Provides a protective layer on the moving metal surfaces which resists break down, even under difficult conditions.


  • ACEA E4, E7
  • API CI-4
  • MB-Approval 228.5
  • MAN M 3277
  • Volvo VDS-3
  • RVI RLD-2
  • Cummins CES 20077, 20078
  • MTU Oil Category 3
  • JASO DH-1
  • Deutz DQC III-10
  • Mack EO-N
  • DDC Power Guard 93K215
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*Average of wear parameters in industry standard tests vs. industry test pass criteria.