Diamond Class® AW Turbine Oil

Rust & Oxidation-Inhibited, Anti-Wear Turbine Oil

Phillips 66® Diamond Class AW Turbine Oil is a premium quality, rust and oxidation (R&O)-inhibited, anti-wear turbine oil developed for use in geared and direct-drive gas turbines and steam turbines in severe service.

Features & Benefits

  • Outstanding oxidation resistance and thermal stability for long service life
  • Protects against sludge and varnish formation
  • Excellent wear protection for gears and bearings
  • Protects against rust and corrosion
  • Excellent water-separating properties
  • Resists the formation of emulsions and bacteria buildup
  • Good foam resistance
  • Meets ISO Cleanliness Code rating of 18/16/13 (1)

(1) Note: Applies only to bulk product as delivered from Phillips 66 manufacturing plants. Particle counts may vary from lab to lab.


  • Combined-cycle and co-generation gas turbines
  • Gas turbines and steam turbines with gear drives

Technical Details