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Robust Formula Provides Long-Lasting Protection in Severe Service, including High & Low Temperatures

Monolec® Syn Gear Oil (9919 & 9923) is a 100 percent synthetic, limited slip gear oil with a high-performance additive package, making it an ideal choice for transmissions and differentials that encounter severe service conditions, including fleets of delivery trucks, heavy-duty pickup trucks, school buses, and bucket trucks. Its high-performance formula will not break down in severe service. It resists gear and bearing wear, viscosity loss, foaming, high-temperature oxidation, and volatility, allowing it to deliver long-lasting protection for any application where extreme pressure and shock loading is expected, including industrial gearboxes that require
enhanced EP protection.

In addition, Monolec Syn Gear Oil’s high-performance formula features a high viscosity index and low pour point that work together to provide high-temperature
film thickness and low-temperature fluidity, allowing it to be used in a wide range of environments – from very hot to below freezing.

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Unit of Measure
Items
Drums/Pails/Grease/Quarter Drums

Monolec® Syn All-Climate Gear Lubricant 9919
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Drums/Pails/Grease/Quarter Drums

Monolec® Syn All-Climate Gear Lubricant 9919
List Price QUOTE
LE_Oil_Drum

Monolec® Syn All-Climate Gear Lubricant 9919
List Price QUOTE
Disposable Tank (BDS)

Monolec® Syn All-Climate Gear Lubricant 9919
List Price QUOTE
Drums/Pails/Grease/Quarter Drums

Monolec® Syn All-Climate Gear Lubricant 9920
List Price QUOTE
Available Container Size N/A Pail N/A Quarter Drum N/A Drum N/A 2,000 lb Disposable Tank N/A Pail
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GHS Statement N/A For commercial and professional use only
Beneficial Qualities N/A Provides Reliable, Long-Lasting Service
  • Resists shearing and maintains viscosity in service
  • Remains thermally stable
  • Prevents formation of carbon deposits
  • Reduces operating temps by transferring heat from gears
  • Protects gears from wear, heavy loads and shock loading
  • Increases equipment reliability, reducing replacement and repair costs
  • Suppresses foam

Performs in High and Low Temperatures
  • Provides high-temperature oxidation resistance
  • Is reliable for low-temperature startups
  • Continues to flow at subzero conditions

Reduces Oil Consumption & Other Costs
  • Extends drain intervals due to long oil life
  • Requires less make-up oil due to low volatility
  • Reduces environmental impact with less waste oil for disposal
  • Reduces maintenance and replacement costs with longer lasting parts and equipment
Proprietary Additive N/A LE’s proprietary additives are used exclusively in LE lubricants. Monolec® Syn All-Climate Gear Lubricant 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 N/A
  • AGMA 9005-EO2 (9919)
  • API GL-5, MT-1 (9919-9920)
  • Arvin Meritor 0-76-M (9920)
  • Mack GO-J (9919-9920)
  • MIL-PRF-2105E (9919-9920)
  • Rockwell 0-76-B (9920), 0-76-D (9919), 0-76-J (9919-9920)
  • SAE J2360 (9919-9920)
  • Scania ST0 1:0, 2:0A (9920)
  • Service Fill Limited Slip (9919)
  • US Steel 224 (9919-9920)
  • USDA H2 (9919-9920)
  • ZF TE-ML 05B, 07A, 12B, 16F, 19C, 21B (9920)
Typical Applications N/A
  • Differentials & transmissions in:
    • Over-the-road fleets
    • Heavy-duty rolling stock
    • Stop-and-go vehicles
    • Off-highway equipment
  • Industrial gearboxes and worm drives that:
    • Call for SAE 75W-90 gear oil (9919)
    • Call for SAE 75W-140 gear oil (9920)
    • Are subjected to low and high temperatures, such as freezer units and paper drums
Asset Reliability Solutions N/A Reliability Solution Products
Color N/A Green
SAE Grade N/A 75W-90 N/A 75W-90 N/A 75W-90 N/A 75W-90 N/A 75W-140
Relative Density @ 60ºF/60ºF, ASTM D1298 N/A 0.860 N/A 0.860 N/A 0.860 N/A 0.860 N/A 0.866
Viscosity @ 100°C, cSt, ASTM D445 N/A 16.0 N/A 16.0 N/A 16.0 N/A 16.0 N/A 24.8
Viscosity @ 40°C, cSt, ASTM D445 N/A 115 N/A 115 N/A 115 N/A 115 N/A 180
Viscosity Index ASTM D2270 N/A 140 N/A 140 N/A 140 N/A 140 N/A 165
Viscosity-Brookfield @ -40ºC, cP, ASTM D2983 N/A ≤150,000
Flash Point ºC (ºF), (COC), ASTM D92 N/A 212 (414) N/A 212 (414) N/A 212 (414) N/A 212 (414) N/A 188 (370)
Pour Point °C (°F), ASTM D97 N/A -51 (-60) N/A -51 (-60) N/A -51 (-60) N/A -51 (-60) N/A -45 (-49)
Copper Corrosion 3 hrs @ 100ºC, ASTM D130 N/A 1b
Timken OK Load lbs, ASTM D2782 N/A 60 N/A 60 N/A 60 N/A 60 N/A 65
FZG Scuffing Load Capacity Fail Stage, ASTM D5182 N/A 12
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