AUTO SYNTH 75W-90 GL-5 – Fully Synthetic Gear Lubricant
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75W-90
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JASO GL-4
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Fully Synthetic
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Gear Lubricat
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1 Ltr, 2.5 Ltr
5 Ltr, 10 Ltr
20 Ltr, 50Ltr
210 Ltr
AUTO SYNTH
Powerex AUTO SYNTH 75W-90 GL-5 is a fully synthetic gear lubricant formulated for hypoid differentials, axle systems and selected automotive gear applications operating under varying load and temperature conditions. The oil is designed to provide wide-range extreme-pressure protection, strong oil film strength and reliable gear surface separation during regular service.
Built with Synth Drive Armor, AUTO SYNTH supports synthetic gear lubrication, EP protection and consistent viscosity behaviour across a broad operating temperature range. Its 75W-90 GL-5 performance level makes it suitable for gear systems where fully synthetic multi-grade gear oil and hypoid gear protection are recommended by the vehicle or equipment manufacturer.
AUTO SYNTH is suitable for workshops, vehicle owners and service centres looking for a dependable 75W-90 fully synthetic GL-5 gear oil for compatible differentials, final drives, axle systems and hypoid gear applications.
- Suitable for differentials, final drives and axle systems requiring 75W-90 GL-5 fully synthetic gear oil.
- Suitable for hypoid gear applications where GL-5 performance level gear lubricant is recommended by the vehicle manufacturer.
- Can be used in selected passenger cars, SUVs, utility vehicles and light commercial vehicles where 75W-90 GL-5 gear oil is specified.
- Designed for gear systems operating under varying temperature, speed and load conditions.
- Suitable for applications requiring synthetic gear lubrication, EP protection and stable oil film strength.
- Not intended for synchromesh manual transmissions requiring GL-4 oil unless GL-5 / 75W-90 is specifically approved by the vehicle manufacturer.
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Synth EP — Supports extreme-pressure protection in compatible hypoid gear systems.
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All Temp — Maintains lubrication response across varying temperature conditions.
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Hypoid — Designed for hypoid differentials and axle gear applications requiring GL-5 performance.
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Film Strength — Maintains strong oil film between heavily loaded gear surfaces.
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75W-90 Support — Suitable for gear systems requiring 75W-90 fully synthetic GL-5 gear oil.
| Test Parameters | Method | Results |
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| SAE Viscosity Grade | SAE J306 | 75W-90 |
| Performance Level | Standard Observation | GL-5 |
| Kinematic Viscosity @ 40°C | ASTM D445 | 90–115 cSt |
| Kinematic Viscosity @ 100°C | ASTM D445 | 14.0–16.5 cSt |
| Viscosity Index (VI) | ASTM D2270 | ≥ 150 |
| Brookfield Viscosity @ -40°C | ASTM D2983 | ≤ 150,000 cP |
| Flash Point | ASTM D92 | ≥ 210°C |
| Pour Point | ASTM D97 | -42°C (max) |
| Copper Strip Corrosion | ASTM D130 | 1b max |
| Foaming Tendency | ASTM D892 | Passes |
| Density @ 15°C | ASTM D4052 | 0.860–0.880 g/cm³ |
The values mentioned above are typical and may vary within acceptable manufacturing tolerances. Continuous product development may lead to changes without prior notice.
