Diamond Class®Turbine Oil

Long-Life, Rust & Oxidation-Inhibited Turbine Oil

Phillips 66®Diamond Class Turbine Oil is a premium quality, rust and oxidation (R&O)-inhibited turbine oil developed for use in gas turbines and steam turbines in severe service. It is specially formulated to protect against sludge and varnish formation in new-generation gas turbines.

Features & Benefits

• Outstanding oxidation resistance and thermal stability for long service life

• Outstanding control of sludge and varnish formation in base-loaded and peaking turbines

• 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


• Direct-drive, combined-cycle and co-generation gas turbines(1)

• Direct-drive steam turbines(1)

(1)Note: For turbines with gear drives, use Diamond Class AW Turbine Oil

Technical Details

Licenses & Approvals

Diamond Class Turbine Oil meets the requirements of the following industry and OEM specifications:

• ABB G12106

• Alstom Power HTGD 90 117, for turbines without gear drives

• ASTM D4304-06a, Type I & Type III Turbine Oil

• British Standard 489

• Cincinnati Machine P-38, P-54, P-55

• DIN 51515 Part 1, Lubricating Oils, Type L-TD

• DIN 51515 Part 2, Lubricating Oils, Type L-TG

• DIN 51517 Part 2, Lubricating Oils, Type CL

• DIN 51524 Part 1, Hydraulic Oils, Type HL

• Elliott ring-oiled turbines, where mineral-based turbine oil is specified

• General Electric GEK 107395a, GEK 32568j, GEK 46506e, GEK 27070 (obsolete), GEK 28143b (obsolete)

• ISO 8068, Type L-TGB, Type L-TGSB

• MHI MS04-MA-CL001, CL002, CL005

• Siemens Power Generation TLV 9013 04, TLV 9013 05

• Siemens Westinghouse 21T0591 (obsolete), 55125Z3 (obsolete)

• U.S. Military MIL-PRF-17672D, Symbol 2075 T-H (ISO VG 32), 2110 T-H

(ISO VG 46), 2135 T-H (ISO VG 68)

• U.S. Steel 120, 125, 126

Additional Details
ISO Grade32
Specific Gravity @ 60°F0.8607
Density, lbs/gal @ 60°F7.17
Color, ASTM D1500<0.5
Flash Point (COC), °C (°F)222 (432)
Pour Point, °C (°F)-40 (-40)
cSt @ 40°C32.7
cSt @ 100°C5.5
Viscosity Index106
Acid Number, ASTM D974, mg KOH/g0.04
Air Release, ASTM D3427, minutes<4.0
Copper Corrosion, ASTM D1301B
Demulsibility, ASTM D1401, minutes to pass5
Foam Test, ASTM D892, Seq. I, mL0/0
Oxidation Stability
TOST, ASTM D943-04a, hours>10,000
RPVOT, ASTM D2272, minutes>1,700
Rust Test, ASTM D665 A&BPass
Cleanliness Code, ISO 4406:199918/16/13