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Phillips 66 76® Lubricants Triton® 680 GEO SAE Grade 15W-40  (discontinued **)
Categories: Fluid; Lubricant

Material Notes: 76® Triton 680 GEO is a premium quality, low-ash, dispersant detergent gas engine oil designed for use in high-output, 4-stroke cycle natural gas engines operating under heavy loads and extreme temperatures. Engines operating in this type of service typically are found on crude oil and gas transmission pipelines, electrical power generators, gas compressors, irrigation water pumps and well drilling rigs. Triton 680 GEO is formulated with field-proven performance additives to meet the rigorous lubrication demands of modern, fuel-efficient, low-emission gas engines. It provides excellent resistance to oil oxidation and nitration, protects against ring and liner wear, helps minimize engine sludge and piston deposits for outstanding engine cleanliness, and protects against corrosion. It also protects against valve stem deposits and valve recession, resulting in reduced maintenance and extended engine life. The additive package has low phosphorus content to meet the requirements of gas engines equipped with catalysts for exhaust after-treatment.


  • Turbocharged, lean-burn and naturally aspirated 4-stroke cycle natural gas engines where the manufacturer specifies a low-ash gas engine oil meeting API CD performance requirements
Triton 680 GEO is recommended for use in natural gas engines manufactured by:
  • Caterpillar
  • Climax
  • Colt-Fairbanks Morse
  • Dresser Rand (Category I, II, III)
  • Minneapolis Moline
  • Nordberg
  • Ruston
  • Superior
  • Wartsila
  • Waukesha
  • Worthington
  • Field-proven performance in providing outstanding engine cleanliness
  • Proven performance in lean-burn engines
  • High dispersancy protects against engine sludge and varnish deposits
  • Excellent resistance to oil oxidation and nitration
  • Protects against scuffing and wear
  • Protects against rust and corrosion
  • Protects against valve stem deposits and valve recession
  • Compatible with emissions system catalysts
  • Does not contain any bright stock, which can cause harmful carbon deposits

Information provided by Phillips 66 Lubricants. The 76® Lubricants brand name was consolidated into other Phillips 66 brands in 2016; many products remain available under a new name.

Available Properties
  • Specific Gravity
  • Density
  • Viscosity, Cold Cranking
  • Viscosity Measurement, Index
  • Kinematic Viscosity at 40°C (104°F)
  • Kinematic Viscosity at 100°C (212°F)
  • Ash, ASTM D874, Sulfated
  • ASTM Color, ASTM D1500
  • Total Base Number, ASTM D2896
  • Pour Point
  • Flash Point, COC
  • Phosphorous, P
  • Zinc, Zn
Property Data

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