Find an International Distributor

Unique Additives by Lubrication Engineers

Unique Additives by Lubrication Engineers

LE Inc’s own Technology Center in Wichita, Kansas, USA, continually develops more effective and efficient additives and products that are exclusive to Lubrication Engineers. This ensures that LE lubricants will remain the finest available in the industrial world.

LE’s unique additives are the main reasons why LE lubricants provide the best possible product performance versus competitive brands and consistently increase profitability for all our customers by:

  • Extending service intervals (reduced lubricant consumption)
  • Increasing equipment life (less wear)
  • Reducing energy consumption (less friction)
  • Improving reliability (less expensive downtime)
  • Minimising inventory (multipurpose products)

These exclusive LE additives are only available in LE products – no other company has access to, or uses this proprietary additive technology.


Fifty years after the introduction of its famous, unique and proprietary anti-wear additive Almasol, LE launched Duolec – an even better additive for enhancing gear oils. PDF (more info) (PDF - 711KB)

What is Duolec?

  • LE’s exclusive dual-acting liquid additive, which imparts synergistic properties to LE 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 minimises the effects of any contact, thereby reducing friction and preventing surface wear.

What does Duolec do?

  • Reduces friction, heat and wear in gearboxes and gears.
  • Increases lubricant film strength and protects metal surfaces by outperforming at greater temperatures and loads.

How does Duolec work?

Thermally Activated Technology

  • Duolec incorporates revolutionary technology that is thermally activated to provide a dual layer of anti-wear and extreme pressure protection that forms a solid-like protective layer on the metal surface.
  • This fills surface asperities, effectively smoothing the surface and minimizing the effects of any metal-to-metal contact, thereby reducing friction and preventing welding and surface wear.
  • Duolec also greatly enhances the film strength of the oil to prevent rupture of the oil film and minimise asperity contact.
  • The technology in Duolec is designed to be thermally activated in stages. When the loads are increasing, the Elasto-Hydro-Dynamic (EHD) and mixed film anti-wear components of Duolec start working. After loads become even greater, the boundary lubrication extreme pressure performance of Duolec is activated.

Anti-Wear & Extreme Pressure

  • Like Monolec, it is a liquid anti-wear additive for the EHD regime and is soluble in base fluids.
  • Like Almasol, it works in the boundary regime of extreme pressure surface protection at temperatures normally encountered by gear lubricants.

How does Duolec perform?

  • In a wear test according to ASTM protocol, Duolec was found to reduce wear by as much as 11% when it was the only additive incorporated into base oil – proving its outstanding performance without the interference of other ingredients.
  • Testing for the friction reduction capabilities of Duolec was conducted using the SRV friction test machine. The test results showed a 25% reduction in friction over the base oil when Duolec was incorporated.

Value of Duolec to LE Lubricants

  • Is designed specifically for use in gear lubricants under the conditions and loads typical to gear service
  • Acts synergistically to improve performance qualities of other components in the lubricants
  • Reduces wear by reducing friction, improving oil film strength and providing surface protection when extreme pressures cause metal to metal contact
  • Does not build up or fall out of solution


Almasol reduces friction, heat and wear and resists chemical attack while withstanding high loads and temperatures
to 1,038°C (1,900°F) It has been used on every manned U.S. space mission due to its incredible capabilities.
PDF (more info) (PDF - 311KB)

What is Almasol?

  • LE’s exclusive solid wear-reducing agent
  • Highly refined dry-film lubricant is derived from aluminum, magnesium and silicate.
  • Almasol particles are so small (1-2 microns) that 8,000 would cover this full stop.

What does Almasol do?

  • Minimises metal-to-metal contact
  • Reduces friction, heat and wear in bearings, gearboxes, gears and chains

How does Almasol work?

  • Is attracted to metal surfaces, forming a microscopic layer but not building on itself or affecting machine clearances
  • Acts like a protective glove around all moving parts, providing resistance to acid and reduced friction, heat and wear
  • Carries heavy loads of up to 400,000 psi, providing complete protection against shock loads

How does Almasol perform?

  • Reduces wear – In FZG tests, LE lubricants containing Almasol show less wear than other commercial gear oils.
  • Provides EP protection – In case of load increase and/or speed decrease
  • Reduces friction and energy – Provides smooth, low drag surface and reduces heat

Molybdenum Disulfide (MoS2)
Fluorocarbon (PTFE)
Maximum Service Temperature
Load-Carrying Capacity, psi
Lubrication Mechanism
Shearing of molecular
Polymer alters orientation
Acid Resistance
Some – cannot tolerate hydrochloric acid, nitric acid, fluorine, chlorine, pure oxygen
Has a natural affinity to metal as a result of surface attraction. Will not build on itself or affect machine tolerances.
Oxidises in air above 343°C to form molybdenum trioxide which is abrasive. Tendency to build on itself & affect close tolerances. Cannot tolerate hydrochloric acid & nitric acid, which are often present in lubricant environments especially where heat, water & air are present
Galvanic corrosion problems. Tendency to build on itself.
No load-carrying capacity. Tendency to build on itself.



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. By separating the moving metal components, it minimises metal-to-metal contact and greatly reduces friction, heat and wear.

Should the oil’s film strength break down, Monolec reacts chemically to form a protective, synthetic lubricant that increases the lubricant’s film strength without affecting clearances. PDF (more info) (PDF - 380KB)

What is Monolec?

  • LE’s exclusive liquid wear-reducing agent
  • Name is derived from “mono-molecular” – how the molecules form a single molecular lubricating film on metal surfaces

What does Monolec do?

  • Reduces friction, heat and wear (proven 24.2% reduction) in engines, pumps, bearings, transmissions
  • Less friction = less energy = cost savings
  • Monolec is used in LE greases, hydraulic oils, compressor and turbine oils, engine oils, industrial oils and other products.

How does Monolec work?

  • Protects all metal surfaces with a single layer of “liquid ball bearings”
  • Reacts with any high-temperature asperities allowing the abrasive high points to flow, rather than tear
  • Increases oil film strength by up to 200% through particulate attraction

How does Monolec perform?

  • Acts synergistically to improve performance qualities of other components in oils and greases. It enhances anti-wear agents in LE lubricants
  • Reduces wear, lowers operating temperatures and greatly extends equipment life
  • Has no negative side effects, such as becoming corrosive, building on itself or falling out of suspension
  • Outperformed all competitive products during the Bowden-Leben Test at Imperial College, London. This is a test used to measure the effect of temperature on the coefficient of friction of lubricant oils. When all conventional chemical anti-wear additives broke down between 204 and 232°C (350 and 450°F), Monolec continued to protect against wear to nearly 315°C (600°F).


Quinplex contributes to outstanding water resistance, tackiness and enhanced mechanical stability, and helps to form a barrier against corrosion. It adheres to the applied surface, which allows the grease to resist pound-out better. PDF (more info) (PDF - 698KB)

What is Quinplex?

  • LE’s exclusive impact-resistant additive that enhances lubricant performance

What does Quinplex do?

  • Improves water spray-off resistance
  • Improves tackiness
  • Improves cohesion (enhances the coupling of the oil with the grease thickener)
  • Improves mechanical stability
  • Forms a barrier against rust and corrosion

How does Quinplex perform?

Lubricants containing Quinplex have decisively outperformed competitive products in several areas:

  • Stable viscosity: It increases the viscosity index of fluid products and grease base oils, which stabilises the viscosity against the influence of temperature changes.
  • No detrimental effects: Due to the chemical composition of Quinplex, it will not interfere with other chemically active components of lubricants.
  • Higher load-carrying ability: Research in the UK has shown that in a journal bearing test rig, lubricants with Quinplex carried more load than lubricants of equal viscosity but without Quinplex. Research also indicated the load-carrying capacity is substantially greater than existing theory predicts.
  • Water spray-off test results: Almagard® Vari-Purpose Lubricant (3752), which contains Quinplex, will typically have less than 10% water spray-off loss in the ASTM D4049 test. This compares to 60-95% spray-off loss measured on competitive high-performance NLGI 2 multipurpose lithium products.
  • Impact test (slap test): This LE test demonstrates the ability of greases containing Quinplex to resist pound-out under EP loads.

In addition to LE’s unique Duolec, Almasol, Monolec and Quinplex additives, there are also many other different types of additives that are used by LE to improve the quality and performance of our lubricants:

  • Antioxidants: Resist the formation of acids, sludge and varnish, all of which increase oil viscosity
  • Extreme Pressure & Anti-Wear Agents: Protect against shock loading, scuffing, galling, adhesive wear and abrasive wear
  • Corrosion Inhibitors: Protect against rust and corrosion
  • Foam Inhibitors & Air Release Agents: Reduce foaming and air entrainment
  • Demulsifying Agents: Enable the lubricant to separate faster from water
  • Viscosity Index Improvers: Increase the operational temperature range of the lubricant
  • Detergents: Keep equipment parts clean in high-temperature operations and protect parts from rust formation
  • Dispersants: Suspend foreign bodies within the lubricant by preventing them from agglomerating or collecting on engine parts to form sludge and varnish
  • Pour Point Depressants: Lower the solidification temperature of the lubricant
  • Base Oils: The finest, highest quality, specially refined base oils are used – along with the additives – to produce LE’s high-performance, superior quality lubricants.

Back to Top

Get Adobe Reader

We use cookies to help personalize your web experience and improve our websites. To find out more about what cookies are, how we use them and how to delete them, see our Privacy Policy. By continuing to use this site, you are consenting to the use of cookies.