Extra Duty Gear Oil

Premium Extreme-Pressure Industrial Gear Oil; Formulated with "Clean Gear" Additive Technology

Phillips 66®Extra Duty Gear Oil is a premium quality, heavy-duty, extreme pressure (EP) industrial gear oil developed for the lubrication of heavily loaded enclosed gear drives operating under moderate to severe service conditions. It is specially formulated with “clean gear” additive technology to minimize deposit formation and provide excellent gearbox cleanliness. It is recommended for use in all applications where the equipment manufacturer specifies an AGMA EP gear oil.

Features & Benefits

  • High load-carrying capacity for protection against scuffing and wear
  • Excellent oxidation resistance and thermal stability
  • Excellent deposit control for gearbox cleanliness
  • Protects against rust and corrosion
  • Fast water separation
  • Quick foam release
  • Effective mist suppression (“M” grades)


• Enclosed industrial gear drives operating under heavy loads, high peak loads or intermittent shock loads

• Enclosed spur, bevel, helical, herringbone and planetary gear drives where the equipment manufacturer specifies an AGMA EP gear oil

• Heavily loaded plain and rolling-element bearings

Technical Details

Licenses & Approvals

Extra Duty Gear Oil meets the requirements of the following industry specifications:

  • ANSI/AGMA Standard 9005-E02, Anti-Scuff/Anti-Wear (EP) Oils
  • DIN 51517 Part 3, Lubricating Oils, Type CLP
  • Fives Cincinnati P-77 (ISO VG 150), P-74 (ISO VG 220), P-59 (ISO VG 320), P 35 (ISO VG 460) (approved)
  • German Steel Industry SEB 181226, Type CLP
  • ISO 12925-1, Type L-CKC
  • U.S. Steel 224
Additional Details
ISO Grade68
AGMA Grade2 EP
Specific Gravity @ 60°F0.876
Density, lbs/gal @ 60°F7.29
Color, ASTM D15003
Flash Point (COC), °C (°F)235 (455)
Pour Point, °C (°F)-33 (-27)
cSt @ 40°C68
cSt @ 100°C8.7
SUS @ 100°F353
SUS @ 210°F55.5
Viscosity Index99
Acid Number, ASTM D974, mg KOH/g0.73
Copper Corrosion, ASTM D1301a
Foam Test, ASTM D892, Seq. I, mL0/0
Four-Ball EP, ASTM D2783, Weld Load, kgf---
Four-Ball Wear, ASTM D4172
Scar Diameter, mm0.3
FZG Scuffing Test, ASTM D5182
Failure Load Stage12
Timken OK Load, ASTM D2782, lb---