Extreme Pressure Gear Lubricant Meets Demanding Requirements of Most Differentials and Transmissions

Monolec® Gear Lubricant (703-704) offers the versatility of one product that meets the demanding fleet requirements of all types of differentials (including limited slip) and transmissions, as well as most industrial enclosed gearboxes. A multiviscosity extreme pressure gear oil, Monolec Gear Lubricant was formulated to achieve the proper balance between load-carrying capacity, film strength and lubricity.

Unit of Measure

Benefits and Recommendations

Available Container Size

N/A Pail

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GHS Statement

N/A For commercial and professional use only

Beneficial Qualities

N/A Wear Prevention
  • Provides exceptional wear resistance, ensuring longer gear life and less maintenance expense
  • Possesses high film strength, keeping metal surfaces separated
  • Offers outstanding rust and corrosion resistance
Long-Lasting Reliable Service
  • Provides superior oxidation stability and long life
  • Maintains low operating temps by reducing friction
  • Breaks up foam bubbles as they form
  • Separates readily from water
  • Prevents sludge deposits
  • Extends drain intervals with less make-up between drains
  • Does not affect seals
  • Multiviscosity for use in all seasons
  • Delivers exceptional performance in most types of gearboxes
  • Can be used in most differentials and transmissions
Available Grades
  • SAE 80W-90 (703)
  • SAE 85W-140 (704)

Proprietary Additive


LE’s proprietary additives areused exclusively in LE lubricants.Monolec® Gear Lubricant containsMonolec.

Monolec® wear-reducing additivecreates a single molecularlubricating film on metal surfaces,vastly increasing oil film strengthwithout affecting clearances. Aninvaluable component in LE’sengine oils, industrial oils andmany of its other lubricants,Monolec allows opposing surfacesto slide by one another, greatlyreducing friction, heat and wear.

Performance Requirements Met or Exceeded

  • AGMA 9005-D94
  • API GL-5 & MT-1
  • CS-3000B
  • Diamond Power Soot Blower
  • Mack GO-H
  • PG-2
  • Rockwell (0-76-D, 0-76-A)
  • SAE J2360 (April 2012)
  • USDA H2


  • Not an automatic transmission, hydraulic orsemi-automatic transmission oil
  • Not for use in common sump systems that usecombination gear-hydraulic oil, hydraulic oil ora power steering fluid

Typical Applications

  • All differentials and transmissions specifying anEP lubricant (except those requiring pure mineraloil), including:
    • Over-the-road and stop-and-go fleets
    • Off-highway equipment transfer cases,overdrive units, oil-lubricated wheel bearingsand steering gearboxes
    • Limited slip differentials
    • Rockwell and Eaton axles
    • Heavily loaded industrial gearboxes
    • Any gearboxes that have bronze gears, thrustwashers or other parts that require an EP gear oil
    • Worm gearboxes calling for EP gear oils
    • Especially appropriate for machine tools and otherprecision gearing because low wear rate keepsthem within specification longer

Asset Reliability Solutions

N/A Reliability Solution Products

Customer Testimonials

N/A 0703 & 704 Lincoln Paving
0703 704 1275 8800 PJS Trucking
0704 7500 8800 BLT Brothers Inc
0704 Falzone Towing
0704 Nevada Baking Co
6120 & 704 Bryson Crane Rental Service

Physical Characteristics - Typical


N/A Red

SAE Grade

N/A 85W-140

Performance Test Results

Relative Density @ 60ºF/60ºF, ASTM D1298

N/A 0.897

Viscosity @ 100°C, cSt, ASTM D445

N/A 28.25

Viscosity @ 40°C, cSt, ASTM D445

N/A 403.5

Viscosity Index ASTM D2270

N/A ≥95

Viscosity-Brookfield @-26°C, cP, ASTM D2983

N/A -

Viscosity-Brookfield @ -12°C, cP, ASTM D2983

N/A ≤150,000

Flash Point °C (°F), (COC), ASTM D92

N/A 204 (399)

Pour Point °C (°F), ASTM D97

N/A -15 (5)

Copper Corrosion 3 hrs@ 121ºC, ASTM D130

N/A 1b

Timken OK Load lbs, ASTM D2782

N/A 70

Evaporation 22 hrs @ 100ºC, % loss, ASTM D972

N/A 1.3