Lubrication Engineers Monolec Ultra® Engine Oil 8800

Regular price


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 off-road 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.



Cost-Saving Service

  • Extends oil drain intervals* with specified filter changes and periodic oil analysis (ask your LE consultant about the Xamine® Oil Analysis Program)
  • Reduces oil consumption
  • Improves fuel economy
  • Protects against engine wear, extending life

Premium Performance

  • Protects against deposits, keeping engine parts cleans
  • Neutralizes acids generated from oxidation, preventing corrosive damage
  • Prevents thermal degradation, loss of lubricity and engine cavitation with improved aeration control
  • Decreases engine noise

All-Weather Performance

  • Maintains viscosity at high and low temperatures
  • Allows oil flow at extremely cold temperatures
  • Ensures minimal drag during cold startups
  • Effectively lubricates at high temperatures

Greener Technology

  • Specially formulated to meet API CK-4 standards for low emission engines
  • Compatible for use with biodiesel-containing fuels
  • Compatible for use in vehicles equipped with diesel particulate filters
  • Works in conjunction with EGR engines to manage soot and other exhaust contaminants
  • Low SAPS formula minimizes poisoning of SCR systems and particulate filtration traps



  • ACEA E7, ACEA E9-2012
  • API-SAE Service CK-4, CJ-4, CI-4, CI-4 Plus, CH-4
  • Caterpillar, ECF-2 and ECF-3
  • Cummins CES 20086, CES 20081
  • Daimler MB 228.31
  • Detroit Diesel DFS 93K222, DFS 93K218
  • Ford WSS M2C171-F1
  • Mack EOS-4.5, EO-O Premium PLUS, EO-N
  • MAN M3575
  • MTU category 2.1
  • Renault RLD-4, RLD-3
  • Volvo VDS-4.5, VDS-4, VDS-3



  • On- and off-road diesel engines, including over-the-road tractor trailers, pickup trucks, construction, and mining equipment, farming equipment, and more
  • Stationary diesel engines, such as generators and irrigation pumps
  • Backward compatible for use in older diesel engines



  • Not for use in low-emission gasoline engines
  • Not for use in engines with silver alloy bearings
  • 8130: When used in Cummins engines requiring oil that meets the CES 20078 spec, do so in coordination with a used oil monitoring program.


Color: Red

SAE Grade: 15W-40



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