Phillips 66® High Performance Gear Oil is a heavy-duty, API GL-5 automotive gear lubricant specially designed for use in racing applications. It also will provide excellent protection in passenger car and truck axles with either conventional or limited-slip differentials.

You are currently viewing HIGH PERFORMANCE GEAR OIL

Features & Benefits

  • Excellent 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
  • Protects against rust and corrosion
  • Good foam resistance
  • Friction-modified to prevent chatter in limited-slip and positraction differentials


  • Axles on racing vehicles
  • Passenger car and truck axles with either conventional or limited-slip differentials
  • Suitable for initial fill of new or rebuilt limited-slip differentials, for top-off and for refill after a complete drain

Technical Details

  • 80W-90
  • Licenses & Approvals

    High Performance Gear Oil meets or exceeds the requirements of: #API Service GL-5 #Mack GO-J #MIL-PRF-2105E #SAE J2360

    Additional Details

    SAE Grade 80W-90
    Specific Gravity @ 60°F 0.883
    Density, lbs/gal @ 60°F 7.35
    Color, ASTM D1500 3
    Flash Point (COC), °C (°F) 212 (414)
    Pour Point, °C (°F) -30 (-22)
    Viscosity, Brookfield
    cP @ -26°C 90000
    Viscosity, Kinematic
    cSt @ 40°C 139
    cSt @ 100°C 14.5
    Viscosity Index 103
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