Superior straight-grade, low ash natural gas engine oil

8945 MONOLEC® Gas Engine Oil is a superior, straight-grade, low ash natural gas engine oil formulated with cutting edge technology that differentiates its performance from other natural gas engine lubricants. Formulated using high-performance base fluids, salicylate additive chemistry for superior deposit control, and outstanding wear reducing additives, including MONOLEC®, LE's exclusive wear- reducing compound. All of these components work together synergistically to greatly decrease friction, minimize wear, remove heat, and keep engine components clean. It has been proven in various engine types, under severe operating conditions.

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


Available Container Size

N/A Pail

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GHS Statement

N/A For commercial and professional use only

What is MONOLEC®?

N/A MONOLEC® is LE's exclusive wear-reducing additive which has proven its extraordinary performance in thousands of applications. It is an invaluable component in LE's engine oils, industrial oils and other lubricants bearing the MONOLEC® trademark.

MONOLEC® creates a singular molecular lubricating film on the metal surface, vastly increasing film strength without affecting tolerances. MONOLEC® allows opposing surfaces to slide by one another, greatly reducing friction, heat and wear.


  • Superior oxidation stability and nitration resistance resulting in extended oil life.
  • Efficient detergent/dispersant additives minimize engine deposits.
  • Minimizes valve seat recession.
  • Excellent wear protection.
  • Contains MONOLEC®, LE's exclusive wear-reducing additive.
  • Reduces oil consumption resulting in lower maintenance and cost of use.

Performance Requirements Met or Exceeded

N/A Ajax API CF Bessemer Caterpillar (3600) Clark Cooper Cummins CES 20074 (mobile) Detroit Deutz GE Jenbacher 1000-0125 Guascor Ingersol Superior Wartsila Waukesha White

Asset Reliability Solutions

N/A Reliability Solution Products

Benefits and Recommendations


  • Stationary gas engines used for power generation or natural gas pumping operations.
  • Can be used with sparkplug ignited engines that have an operating range up to 3000 HP.
  • Meets the performance requirements for mobile applications such as buses using engine types like Cummins, Detroit Diesel, etc. fueled by CNG, LNG, or propane.

Customer Testimonials

Customer Testimonials

N/A 8945 Large Drilling Company

Physical Characteristics - Typical


N/A 129.6 cSt at 40ºC 14.08 cSt at 100ºC 600.64 SUS at 100ºF (Calc) 74.33 SUS at 210ºF (Calc)

Viscosity Index

N/A 106

Calculated Sulfated Ash %

N/A 0.47

API Gravity

N/A 29.9

Specific Gravity

N/A 0.8767

Density (Calc) #/G

N/A 7.300

Copper Corrosion, ASTM D130

N/A 1 a

Flash Point ASTM D92

N/A 254 ºC489.2 ºF

HTHS Vis @ 150, cP (D4683)

N/A 4.2

Pour Point ASTM D97

N/A -18 ºC-0.4 ºF

SAE Grade

N/A 40

Total Acid Number (TAN), ASTM D664

N/A 2.94

Total Base Number, ASTM D2896

N/A 4.99


N/A Red