Premium Oil Boosts Turbine Performance

Highly effective for steam, hydro and gas turbine applications, Monolec Turbine Oil (6461-6463) reduces varnish, reduces water contamination, lengthens equipment life and extends drain intervals. It is a premium, high performance turbine oil with excellent water separation characteristics, rust and oxidation inhibitors, and improved wear-reducing properties. Its proprietary formula consists of select low-volatility paraffinic base fluids enhanced with a synergistic mix of high-performance additives.

Certain turbine applications - including gear-driven turbines or those in which a hydraulic control system and turbine share the same oil - require oil with anti-wear properties. Unlike many anti-wear additives that decrease the oxidation resistance of turbine oils, the proprietary wear-reducing additive in Monolec Turbine Oil provides increased protection against wear with no negative effect on the oxidation life of the oil.

Monolec® is a registered trademark of Lubrication Engineers, Inc.

Lubrication Engineers operates under an ISO 9001 Certified Quality System.
Unit of Measure

Benefits and Recommendations

Available Container Size

N/A Drum

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GHS Statement

N/A For commercial and professional use only

Typical Applications

  • Mainline steam, hydro and gas turbine generators
  • Circulating oil systems
  • Centrifugal compressors
  • Other long-service-life applications


N/A Monolec Turbine Oil is suitable for all mainline and peaking turbine applications.

Beneficial Qualities

N/A Reduces Varnish & Deposits in Gas & Steam Turbines
  • Exhibits excellent thermal stability
  • Has rapid air release properties
  • Resists formation of varnish and sludge
Reduces Water Contamination in Steam & Hydro Turbines
  • Separates readily from water
  • Provides excellent resistance to foaming
  • Imparts superior rust protection
Lengthens Equipment Life
  • Protects moving parts, due to its high film strength
  • Enhances wear-reducing properties without affecting R & O inhibitors
    • Protects thrust plates in bearings
Extends Drain Intervals
  • Provides long-term oxidation resistance and thermal stability
  • Is easily filtered for long-term oil cleanliness

Performance Requirements Met or Exceeded

  • Alstom
  • Cincinnati Machine
  • DIN 51524 Part 1
  • General Electric
  • ISO 8068 (L-TSA & L-TGA)
  • MIL-H-17672D 2075 TH
  • Siemens
  • Solar Turbine
  • USDA H2
  • Westinghouse

Proprietary Additive

N/A LE's proprietary additives are used exclusively in LE lubricants. Monolec Turbine Oil contains Monolec.

Monolec® wear-reducing additive creates a single molecular lubricating film on metal surfaces, vastly increasing oil film strength without affecting clearances. An invaluable component in LE's engine oils, industrial oils and many of its other lubricants, Monolec allows opposing surfaces to slide by one another, greatly reducing friction, heat and wear.

Asset Reliability Solutions

N/A Reliability Solution Products

Customer Testimonials

N/A 6463 Montana Hydro Electric Operation

Available Grades

  • ISO 32 (6461)
  • ISO 46 (6462)
  • ISO 68 (6463)

Physical Characteristics - Typical


N/A Amber

Color ASTM D1500

N/A 1.0

ISO VG / SAE Grade

N/A 68

Performance Test Results

Relative Density @ 60ºF/60ºF, ASTM D1298

N/A 0.872

Low Temperature Stability FTM 3458

N/A Pass

Oxidation by RPVOT @ 150ºC, minutes, ASTM D2272

N/A 915

Oxidation by TOST hours, ASTM D943

N/A >4,000

Filterability Wet, Stage I, ISO 13357

N/A Pass

Foaming Characteristics @ 24ºC/93.5ºC/24ºC, 3 sequences, ml of foam / time to break, ASTM D892

N/A 0/0, 0/0, 0/0

Air Release 9.0-90.0 cSt @ 40ºC: 50ºC, minutes, ASTM D3427

N/A 11.2

Viscosity @ 100°C, cSt, ASTM D445

N/A 8.830

Viscosity @ 40°C, cSt, ASTM D445

N/A 69.10

Viscosity Index ASTM D2270

N/A 95

Rust Test 4 hrs @ 60ºC, Sea H2O, ASTM D665B

N/A Pass

Copper Corrosion 3 hrs @ 100ºC, ASTM D130

N/A 1b

Emulsion Characteristics @ 54ºC, oil-water-emulsion/minutes, ASTM D1401

N/A 40ml-40ml-0ml/5

Flash Point °C (°F), (COC), ASTM D92

N/A 238 (460)

Four-Ball Wear @ 75°C, 1200 rpm, 15 kgf, 60 minutes, mm wear, ASTM D4172

N/A 0.42

Ash--Sulfated %, ASTM D874

N/A 0.05

Pour Point °C (°F), ASTM D95

N/A -24 (-11)

Panel Coker mg, FTM 3462

N/A 134

Acid Number mg KOH/g, ASTM D974

N/A ≤0.15