Phillips 66® Syncon Premium EP Gear Oil is a premium quality, synthetic, extreme pressure gear lubricant specifically recommended for lubricating the heavily loaded gears and rolling-element bearings in motorized wheel gearboxes found on mining haul trucks. It also is recommended for lubrication of enclosed industrial gear drives operating in severe service.
SYNCON® PREMIUM EP GEAR OIL
SYNTHETIC PAO-BASED EXTREME-PRESSURE GEAR LUBRICANT FOR GE MOTORIZED WHEELS

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Features & Benefits
- Outstanding oxidation resistance and thermal stability at high temperatures
- Outstanding low-temperature properties
- High load-carrying capacity
- Protects against scuffing and wear
- Protects against rust and corrosion
- Non-chlorinated additive system
- Suitable for year-round use
- Extended service intervals compared to conventional mineral oil-based gear oils
Applications
- GE motorized wheels found on mining haul trucks
- Enclosed industrial gear drives operating at very high or very low 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 synthetic extreme-pressure gear oil
Technical Details
- ISO Grade: 320
- ISO Grade: 680
- ISO Grade: 320
- ISO Grade: 680
Licenses & Approvals
Syncon Premium EP 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#GE Specification D50E35#German Steel Industry SEB 181226, Type CLP HC#ISO 12925-1:1996, Type L-CKC#Joy Machinery Specification TO-SHEP (ISO VG 320)#U.S. Steel 224
Additional Details
ISO Grade | 320 |
AGMA Grade | 6 EP |
Specific Gravity @ 60°F, ASTM D4052 | 0.854 |
Density, lbs/gal @ 60°F, Calculated | 7.11 |
Flash Point (COC), °C (°F), ASTM D92 | >232 (450) |
Pour Point, °C (°F), ASTM D97 | -54 (-65) |
Viscosity, ASTM D445 | |
cSt @ 40°C | 329 |
cSt @ 100°C | 43.0 |
Viscosity Index, ASTM D2270 | 187 |
Acid Number, ASTM D664, mg KOH/g | 0.9 |
Copper Corrosion, ASTM D130, 3 hrs @ 100°C | 1b |
Rust Test, ASTM D665 A/B | Pass |
Oxidation Stability, Viscosity Increase @ 121°C, %, ASTM D2893 | 2.86 |
FZG Scuffing Test, Failure Load Stage, ASTM D5182 | >14 |
FAG FE8 wear, roller, mg, DIN 51813 | 13 |
FZG Micropitting, 90°C, GF class | High |
Licenses & Approvals
Syncon Premium EP 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#GE Specification D50E35#German Steel Industry SEB 181226, Type CLP HC#ISO 12925-1:1996, Type L-CKC#Joy Machinery Specification TO-SHEP (ISO VG 320)#U.S. Steel 224
Additional Details
ISO Grade | 680 |
AGMA Grade | 8 EP |
Specific Gravity @ 60°F, ASTM D4052 | 0.856 |
Density, lbs/gal @ 60°F, Calculated | 7.13 |
Flash Point (COC), °C (°F), ASTM D92 | >232 (450) |
Pour Point, °C (°F), ASTM D97 | -45 (-49) |
Viscosity, ASTM D445 | |
cSt @ 40°C | 706 |
cSt @ 100°C | 80.5 |
Viscosity Index. ASTM D2270 | 198 |
Acid Number, ASTM D664, mg KOH/g | 0.9 |
Copper Corrosion, ASTM D130, 3 hrs @ 100°C | 1b |
Rust Test, ASTM D665 A/B | Pass |
Oxidation Stability, Viscosity Increase @ 121°C, %, ASTM D2893 | 3.50 |
FZG Scuffing Test, ASTM D5182, Failure Load Stage | >14 |
FAG FE8 wear, roller, mg, DIN 51813 | 13 |
FZG Micropitting, 90°C, GF class | High |