Automotive Lubricants
TECHNOFLUID GEAR EP SERIES
Automotive Gear Oils
(SAE 90 GL-4, SAE 140 GL-4, SAE 75W-90 GL-4 / GL-5, SAE 80W-90 GL-4 / GL-5, SAE 85W-140 GL-4)TECHNOFLUID Automotive Gear Oils EP are high-performance extreme-pressure (EP) lubricants specially formulated for automotive gearboxes and axles.
Manufactured from high-quality base oils and advanced EP additive technology to protect gears operating under high load, shock, and sliding conditions.
Designed to provide superior wear protection, smooth power transmission, and long service life of gear components.
Offer excellent thermal and oxidation stability, ensuring consistent performance over extended drain intervals.
Available in multiple monograde and multigrade viscosities to suit a wide range of automotive and commercial vehicle applications.
Key Benefits
Excellent extreme-pressure properties protect hypoid, bevel, and spur gears.
Superior anti-wear performance reduces gear tooth wear, scuffing, and pitting.
Provides smooth gear shifting and reduced transmission noise.
Good oxidation and thermal stability minimize sludge and deposit formation.
Effective rust and corrosion protection safeguards gear components during operation and idle periods.
Stable viscosity ensures reliable lubrication under varying load and temperature conditions.
Low foaming tendency ensures uninterrupted oil film and smooth gear operation.
Applications
Recommended for use in:
Manual transmissions
Differentials and final drive units
Hypoid gear assemblies
Steering gearboxes (where specified)
Suitable for passenger cars, commercial vehicles, tractors, and off-highway equipment.
GL-4 grades are recommended for synchromesh gearboxes.
GL-5 grades are suitable for hypoid gears operating under severe conditions (as per OEM recommendation).
Vehicles operating in varied climatic and operating conditions.
Typical Uses
Automotive gear systems operating under moderate to severe load and shock conditions.
Performance Standards
Meets or exceeds:
API GL-4
API GL-5 (for applicable grades)
IS 1118 : 1992 (EP Type Gear Oils)
MIL-L-2105D (where applicable)
Operating Characteristics
Maintains stable viscosity and EP performance over extended service intervals.
Non-corrosive to copper and bronze components when used as recommended.
Compatible with commonly used automotive seals and gasket materials.
Specifications
| Characteristics | Test Method | SAE 90 (GL-4) | SAE 140 (GL-4) |
|---|---|---|---|
| Appearance | Visual | Clear & Bright | Clear & Bright |
| Colour | ASTM D1500 | ≤ 4.0 | ≤ 4.0 |
| Base Oil Type | — | Mineral | Mineral |
| API Service Level | — | GL-4 | GL-4 |
| Density @ 29.5°C, g/ml | ASTM D4052 | 0.880 | 0.880 |
| Kinematic Viscosity @ 40°C, cSt | ASTM D445 | 180 – 220 | 400 – 460 |
| Kinematic Viscosity @ 100°C, cSt | ASTM D445 | 18 – 20 | 25 – 30 |
| Viscosity Index | ASTM D2270 | ≥ 95 | ≥ 95 |
| Flash Point (COC), °C | ASTM D92 | ≥ 220 | ≥ 230 |
| Pour Point, °C | ASTM D97 | -6 | -6 |
| Copper Corrosion (3 hrs @ 100°C) | ASTM D130 | 1b | 1b |
| Four Ball Weld Load, kg | ASTM D2596 | ≥ 250 | ≥ 250 |
| Rust Prevention | ASTM D665 | Pass | Pass |
| Characteristics | Test Method | 75W-90 (GL-4/GL-5) | 80W-90 (GL-4/GL-5) | 85W-140 (GL-4) |
|---|---|---|---|---|
| Appearance | Visual | Clear & Bright | Clear & Bright | Clear & Bright |
| Colour | ASTM D1500 | ≤ 4.0 | ≤ 4.0 | ≤ 4.0 |
| Base Oil Type | — | Mineral | Mineral | Mineral |
| API Service Level | — | GL-4 / GL-5 | GL-4 / GL-5 | GL-4 |
| Density @ 29.5°C, g/ml | ASTM D4052 | 0.880 | 0.880 | 0.880 |
| Kinematic Viscosity @ 40°C, cSt | ASTM D445 | 90 – 110 | 130 – 150 | 380 – 420 |
| Kinematic Viscosity @ 100°C, cSt | ASTM D445 | 14 – 16 | 14 – 16 | 26 – 30 |
| Viscosity Index | ASTM D2270 | ≥ 140 | ≥ 135 | ≥ 95 |
| Flash Point (COC), °C | ASTM D92 | ≥ 210 | ≥ 215 | ≥ 225 |
| Pour Point, °C | ASTM D97 | -36 | -27 | -12 |
| Copper Corrosion (3 hrs @ 100°C) | ASTM D130 | 1b | 1b | 1b |
| Four Ball Weld Load, kg | ASTM D2596 | ≥ 315 | ≥ 315 | ≥ 250 |
| FZG Load Stage | DIN 51354 | ≥ 12 | ≥ 12 | ≥ 12 |
| Rust Prevention | ASTM D665 | Pass | Pass | Pass |