• LE Drums & Pails

    Extended-Drain CK-4 Oil Offers Ultimate Package of Performance & Protection for Diesel Engines

    Monolec Ultra® Engine Oil provides exceptional performance and extended-drain service for on- and offroad diesel engines, including stationary engines. It has been formulated to exceed API’s CK-4 technology standards focusing on engine wear protection, oxidation stability, shear stability, resistance to aeration, and compatibility with low emission engines. With its superior formulation of select base oils and Monolec®, LE’s exclusive wear-reducing additive, Monolec Ultra offers dependable all-weather performance, reduces unscheduled downtime, and helps fleets achieve costs savings.

  • Pails/Drums/Oil

    A Technologically Superior Single Grade Engine Oil Designed for Diesel Engines

    LE's Monolec® GFS Engine Oils are a family of SAE 20W through 50 straight-grade engine oils formulated for extended drain service in on-road, off-road and marine diesel engines. They contain Monolec®, LE's exclusive wear-reducing additive, which has proven to reduce wear by 24.2% in radioactive wear tests.



    Lubrication Engineers operates under an ISO 9001 Certified Quality System.

  • Pails/Drums/Oil

    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 wear-reducing additive, Monolec Engine Oil offers increased fuel efficiency, dependable performance and wear protection.

  • Pails/Drums/Oil

    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 wear-reducing additive, Monolec Engine Oil offers increased fuel efficiency, dependable performance and wear protection.