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All Categories > Engine Oils > All Engine Oils > Monolec® GFS Engine Oil 8420 - 8450 > Item # 8430  
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Monolec® GFS Engine Oil 8430

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Item # 8430, Monolec® GFS Engine Oil 8430

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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.

Specifications · Physical Characteristics - Typical · Benefits and Recommendations · Customer Testimonials


What is MONOLEC®?

Monolec® wear-reducing additive creates a single molecular lubricating film on metal surfaces, vastly increasing oil film strength without affecting clearances. 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, greatly reducing friction, heat and wear.

Beneficial Qualities

  • Formulated using high quality, paraffinic base fluids that have been found to provide excellent oxidation resistance and film strength.
  • Exceptional detergency to control formation of deposits in piston ring zones and valve areas, keeping engine clean.
  • Primarily specified for engines but sometimes used in industrial applications, such as air compressors.
  • Oxidation stability and detergency allow for extended drain intervals in diesel engines.
  • Reduces oil consumption.
  • Delivers longer effective life than ordinary engine oil.
  • Protects against rust and corrosion.
  • Contains Monolec®, LE's proprietary wear-reducing additive.

Performance Requirements Met or Exceeded

Allison C-4 Demonstration (SAE 30)
API CF, CF-2 (Licensed)
API SJ (Un-licensed)
Caterpillar TO-2
Daimler Benz 226.0 & 227.0
GM 6094 M
Mack EO-K & EO-K2
VW 501.01

Available Container Size

5 gal
55 gal
275 gal disposable tank
550 gal returnable tank

Reliability Solution Products

Reliability Solution Products

Sulfated Ash, Mass %


Physical Characteristics - Typical


105.7 cSt at 40ºC
11.88 at cSt 100ºC
3.57 HTHS Viscosity at 150ºC, cP ASTM D4683
490 SUS at 100ºF
66.0 SUS at 210ºF

Flash Point

218 ºC
425 ºF



SAE Grade



29.0 ºAPI

Pour Point

-27 ºC
-17 ºF

Total Base Number (TBN)


Min. Viscosity Index


Benefits and Recommendations


Not for use in equipment with silver alloy bearings, such as EMD (Electro-Motive Division of GM). With any engine oil, it is good practice to employ a used oil monitoring program to safely optimize extended drain intervals.

Customer Testimonials

Customer Testimonials

6414 8430 1888 Mills
7500 / 8430 Sunkist Country Club
8430 Elkwood Hipkins
8430 Jubilee Fisheries Inc
8430 Merritts Gravel Inc

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