Phillips 66® Triton Synlube LDO is a synthetic, API GL-5 automotive gear lubricant specially designed for long-drain service and extended warranty protection in passenger car and truck axles with hypoid gear sets.


Features & Benefits

  • Extended drain/extended warranty protection
  • Outstanding oxidation resistance and thermal stability to minimize sludge and varnish formation
  • Excellent thermal durability and extreme-pressure properties for extended gear life
  • High load-carrying capacity for protection against scuffing and wear
  • High shear stability
  • Outstanding low-temperature properties
  • Excellent water-separating properties
  • Protects against rust and corrosion
  • Good foam resistance
  • Compatible with synthetic and conventional automotive gear oils


  • Service fill of conventional differentials in passenger cars and trucks
  • Top-off only of limited-slip differentials in passenger cars and light trucks
  • Service fill of differentials, final drives and transfer cases of some off-highway equipment
  • Non-synchronized manual transmissions in trucks, buses and heavy equipment where the manufacturer specifies an API GL-5 or MT-1 gear oil

Technical Details

  • 75W-90
  • Licenses & Approvals

    Triton Synlube LDO meets or exceeds the requirements of:#API Service GL-5, MT-1#Mack GO-J#MIL-PRF-2105E#SAE J2360

    Triton Synlube LDO is approved for service fill under the following OEM specifications:

    #Meritor O76-R for extended-drain lubricants

    Additional Details

    SAE Grade 75W-90
    Specific Gravity @ 60°F 0.874
    Density, lbs/gal @ 60°F 7.28
    Color, ASTM D1500 L 8.0
    Flash Point (COC), °C (°F) 200 (392)
    Pour Point, °C (°F) -45 (-49)
    Viscosity, Brookfield
    cP @ -40°C 119000
    cP @ -26°C -----
    Viscosity, Kinematic
    cSt @ 40°C 114
    cSt @ 100oC 17.2
    Viscosity Index 166