Offers Dependable, Heavy-Duty Performance in Diesel Engines

Monolec® Engine Oil provides excellent service for engines in mobile equipment and stationary generators. With its formulation of select base oils, shear-stable viscosity improver and Monolec®, LE’s exclusive wearreducing additive, Monolec Engine Oil offers increased fuel efficiency, dependable performance and wear protection. It is designed specifically for applications requiring the CJ-4 specification for those companies and individuals not wanting to switch to a CK-4 fluid.

Unit of Measure

Benefits and Recommendations

Available Container Size

N/A Pail

Beneficial Qualities

N/A Cost-Saving Service
  • Reduces oil consumption
  • Increases fuel efficiency
  • Improves reliability and minimizes downtime
Wear Prevention & Protection
  • Provides maximum wear prevention
  • Extends engine life
  • Keeps engine parts clean with heavy-duty detergents and dispersants
All-Weather Performance
  • Ensures minimal drag during low-temp startups
  • Effectively lubricates at a high temps
Emissions Reduction
  • Works in conjuction with EGR engines to manage soot and other exhaust contaminants
  • Low SAPS formula minimizes poisoning of SCR systems and particulate filtration trips

Proprietary Additives

N/A LE’s proprietary additives are used exclusively in LE lubricants. Monolec®Engine 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.

Performance Requirements Met or Exceeded

  • API-SAE Service CJ-4
  • ACEA E7 (8600 only)
  • Caterpillar ECF-3, ECF-2
  • Cummins CES 20081
  • Daimler MB 228.31 (8600 only)
  • Detroit Diesel DFS 93K218
  • Mack EO-O Premium Plus, EO-N
  • MAN M3575 (8600 only)
  • MTU Category 2.1 (8600 only)
  • Renault RLD-3
  • Volvo VDS-4, VDS-3

Typical Applications

    Diesel engines (fleet)
    • On- and off-road mobile equipment, including over-the-road tractor trailers, pickup trucks, construction equipment, farming equipment and more
    • Specially formulated for low-emission and ultra low sulfur diesel (ULSD) engine and backwards compatible for use in older diesel engines
  • Diesel engines (industrial)
    • Stationary generators


  • Compatible for use with Diesel Particulate Filters
  • Not for use with silver alloy bearings such as EMD engines (Electro-Motive Division of GM)

Physical Characteristics - Typical


N/A Amber

SAE Grade

N/A 10W-30

Performance Test Results - Typical

Relative Density @ 60ºF/60ºF, ASTM D1298

N/A 0.8674

Viscosity @ 100°C, cSt, ASTM D445

N/A 12.33

Viscosity @ 40°C, cSt, ASTM D445

N/A 85.94

Viscosity Index ASTM D2270

N/A 139

Viscosity-HTHS @ 150ºC, cP, ASTM D4683

N/A 3.5

Viscosity-CCS @ -25°C, cP, ASTM D5293

N/A 5,856

Viscosity-MRV TP-1 @ -30°C, cP, ASTM D4684

N/A 19,260

Flash Point °C(°F), (COC), ASTM D92

N/A 221 (430)

Pour Point °C (°F), ASTM D97

N/A -36 (-33)

Ash--Sulfated %, ASTM D874

N/A 1.00

Acid Number mg KOH/g, ASTM D664

N/A 3.26

Base Number ASTM D2896

N/A 9.0