High-Performance Oil Maintains Effective Lubrication in High-Temperature, High-Load Applications

DUOLEC Vari-Purpose Gear Lubricant is a high-performance industrial and automotive gear oil with ISO grades ranging from ISO VG 46 to 1500. Designed for use in any industrial gear or bearing application that requires a thermally stable, extreme pressure lubricant, it maintains performance even after filtration. It also meets the requirements for many hypoid and planetary gears in heavy-duty mobile equipment, as well as differentials in over-the-road vehicles.

Duolec Vari-Purpose Gear Lubricant contains Duolec, LE's dual-acting additive that provides both wear-reducing and EP protection, and is fortified with a shear stable tackifier to provide adhesion to metal during use.

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

Benefits and Recommendations

Available Container Size

N/A Pail

Typical Applications

  • Enclosed gearboxes
  • Bowl mills/pulverizers
  • Homogenizers
  • Hypoid and planetary gears in heavy-duty mobile equipment
  • Differentials
  • Beneficial Qualities

    N/A Maintains Performance in Extreme Conditions
    • Possesses high film strength
    • Remains stable despite high temps
    • Resists oxidation and sludge formation
    • Provides wear-reducing and EP protection
    Adheres to Metal
    • Contains shear-stable tackifier that allows oil to adhere to metal components
    • Remains tacky during high shear use
    Resists Moisture
    • Separates readily from water, continuing to provide effective lubrication
    • Ordinary gear oils will emulsify and foam, causing increased friction and poor lubrication
    • Contains nonsilicone anti-foamants that resist removal during filtration
    • Contains no solids that can be removed during filtration
    • Remains within viscosity grade after filtration

    Performance Requirements Met or Exceeded

    N/A AGMA 9005-E02 API GL-5 Chinese IGO L-CKD Cincinnati Machine David Brown DIN 51517 Part 3 MIL-L-2105E Muller Weingarten DT 55-005/1 U.S. Steel 224 USDA H2

    Asset Reliability Solutions

    N/A Reliability Solution Products

    Proprietary Additives

    N/A LE’s proprietary additives are used exclusively in LE lubricants. Duolec® Vari-Purpose Gear Lubricant contains Duolec.

    Duolec® dual-acting additive imparts synergistic properties to lubricants, providing both wear-reducing and extreme pressure protection. The result of revolutionary technology designed specifically for use in LE gear lubricants, Duolec increases oil film strength and is temperature activated to provide a protective layer that smooths metal surfaces and minimizes the effects of any contact, thereby reducing friction and preventing surface wear.

    Physical Characteristics - Typical


    N/A Purple

    AGMA Grade

    N/A 9 EP

    ISO VG / SAE Grade

    N/A 1500 / 250

    Performance Test Results

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

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

    Viscosity @ 100°C, cSt, ASTM D445

    N/A 81.3

    Viscosity @ 40°C, cSt, ASTM D445

    N/A 1,423

    Viscosity Index ASTM D2270

    N/A 126

    Flash Point °C(°F), (COC), ASTM D92

    N/A 215 (419)

    Pour Point °C (°F), ASTM D97

    N/A -18 (0)

    Copper Corrosion 3 hrs@ 121ºC, ASTM D130

    N/A 1b

    Timken OK Load lbs (kgs), ASTM D2782

    N/A 75 (34)

    Four-Ball EP Weld Point kgf, ASTM D2783

    N/A 400

    Four-Ball EP Load Wear Index kgf, ASTM D2783

    N/A 77

    Four-Ball Wear @ 75ºC, 1200 rpm, 40 kgf, 60 minutes, mm wear, ASTM D4172

    N/A 0.33

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

    N/A Pass

    Relative Density ASTM D1298

    N/A 0.898

    FZG Scuffing Load Capacity Fail Stage, ASTM D5182

    N/A 14+