El Mar® LF-D GEO

Premium, Next-Generation GEO for landfill and digester fuel

Phillips 66® El Mar LF-D (landfill-digester) GEO is a premium quality, next-generation, low-ash, gas engine oil designed for landfill gas applications. It is especially effective in controlling silica deposits formed during the combustion of siloxane gases found in many landfills.

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Features & Benefits

  • Proven extended-drain capability for reduced maintenance costs and maximum productivity
  • Field-proven performance in providing outstanding engine cleanliness
  • High dispersancy protects against sludge and varnish formation
  • Outstanding resistance to oil oxidation and nitration
  • Enhanced protection against piston scuffing and ring and liner wear
  • Excellent protection against rust and corrosion
  • Compatible with emissions system catalysts


  • Turbocharged, lean-burn and naturally aspirated 4-stroke cycle and some 2-stroke cycle natural gas engines where the manufacturer specifies a lowash gas engine oil meeting API CF or API CD performance requirements
  • Gas engines burning landfill gas containing hydrogen sulfide

Technical Details