Phillips 66 Guardol XT 5w-40

Phillips 66 Guardol XT 5w-40
Phillips 66 Lubricants

0.00 LBS

Phillips 66 Guardol XT Full Synthetic 5w-40 Diesel Engine Oil 

(Formerly known as Phillips 66 Triton ECT 5w-40)

Phillips 66 Guardol XT 5w-40 is a premium quality, full-synthetic engine oil developed for use in 4-stroke cycle diesel engines operating under extreme temperature conditions. It meets API CK-4 performance requirements for use in modern low-emission engines designed to meet 2007 and later EPA on-highway exhaust emissions standards, and is backward serviceable for use in older diesel engines.


  • On- and off- highway diesel equipment operating at low ambient temperatures 
  • On-highway diesel trucks equipped with EGR and exhaust aftertreatment systems to meet 2007/2010 emissions standards
  • Older diesel equipment with conventional, non-EGR engines or ACERT engines
  • Off-highway construction, earth moving and mining equipment Mixed fleets with diesel and gasoline-fueled vehicles


  • API Service CK-4 CJ-4, CI-4 PLUS, SN
  • Cummins CES 20086
  • Detroit Diesel DFS 93K222
  • Deutz DQC III-10
  • Mack EOS 4.5, Volvo VDS 4.5
  • Mercedes-Benz Sheet 228.31
  • Renault VI RLD-4
  • Ford WSS-M2C171-F-1
  • ACEA E9-08, E7-08
  • Caterpillar ECF-3

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