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Monolec® GFS Engine Oil (8420-8450)



A technologically superior single grade engine oil designed for diesel engines. It achieves its superior performance levels through the use of select 100% paraffinic base stock with a high natural viscosity index.

  • The finest single-grade, heavy-duty petroleum engine oil available today
  • For diesel engines
  • Superior performance levels
  • Made from select 100% paraffinic base stock
  • High natural viscosity index
  • Contains MONOLEC®, LE's exclusive wear-reducing additive

Monolec® GFS Engine Oil (8420-8450) successes in:

Customer Testimonials

Oil Consumption reduced, lowered operating temperatures, and saving thousands of dollars in make up oil!

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LE's 8450 lowered the transmission temperature by 40°F.

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"The engine manufacturers rep used to come by to get orders for parts from us every 2 weeks but now he only comes by about once every six months."

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Increased Oil Drain Intervalsand elimated Valve Sticking Problem

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Extended Oil Drains from 200 Hours to 550 Hours!

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"This stuff works!"

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