Syncon®EP Plus Gear Oil

High VI Synthetic PAO-Based Extreme-Pressure Industrial Gear Lubricant

Phillips 66®Syncon EP Plus Gear Oil is a premium quality, synthetic, extreme-pressure industrial gear lubricant developed for the lubrication of enclosed gear drives and heavily loaded plain or rolling-element bearings operating at extreme temperatures or in severe service. It is suitable for use over a wider temperature range than conventional mineral oil-based gear oils. It meets the performance requirements of major gear drive manufacturers.

Features & Benefits

• Outstanding oxidation resistance and thermal stability at high temperatures

• Outstanding low-temperature properties

• High viscosity index and low pour point for use over wide temperatures

• Excellent extreme-pressure properties

• Protection against scuffing and wear

• Protects against rust, corrosion, and foaming

• Non-chlorinated additive system

• Suitable for year-round use

• Extended service intervals compared to mineral oil-based gear oils


• Heavily loaded enclosed gear drives, such as those found in mine hoists and mining machinery

• Enclosed industrial gear drives operating at very low or very high temperatures, or operating continuously at higher than normal operating temperatures

• Heavily loaded plain and rolling-element bearings operating at extreme temperatures

• Applications where the equipment manufacturer recommends a high VI, synthetic, extreme-pressure gear oil

Technical Details

Licenses & Approvals

Syncon EP Plus Gear Oil meets the requirements of the following industry and OEM specifications:

• ANSI/AGMA Standard 9005-E02, Anti-Scuff/Anti-Wear (EP) Oils

• DIN 51517 Part 3, Lubricating Oils, Type CLP HC

• German Steel Industry SEB 181226, Type CLP HC

• ISO 12925-1:1996, Type L-CKC

• Joy Machinery Specification TO-SHEP (ISO VG 320), TO-SMEP (ISO VG 220)

• U.S. Steel 224

Additional Details
ISO Grade150
AGMA Grade (obsolete)4 EP
Specific Gravity @ 60°F0.861
AGMA ClassificationAS
Density, lbs/gal @ 60°F7.17
Color, ASTM D15001
Flash Point (COC), °C (°F)249 (480)
Pour Point, °C (°F)-49 (-56)
cSt @ 40°C150
cSt @ 100°C20.9
SUS @ 100°F769
SUS @ 210°F105
Viscosity Index163
Acid Number, ASTM D974, mg KOH/g0.76
Copper Corrosion, ASTM D130, 48 hrs @ 80°C1a
Four-Ball EP, ASTM D2783, Weld Load, kgf315
Four-Ball Wear Test, ASTM D4172, Scar Diameter, mm0.45
FZG Scuffing Test, ASTM D5182, Failure Load Stage>12
Oxidation Stability, ASTM D2893B
Viscosity Increase @ 121°C, %<6