ABOUT RED LINE GEAR OIL
FOR MANUAL TRANSMISSIONS
- Appropriate coefficient of friction for most manual transmission synchronizers (other's synthetic gear oils are often too slippery for proper synchro engagement)
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Red Line offers lubricants to pinpoint nearly every transmission application
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MTL, MT-85 & MT-90 are not for use in differentials with hypoid gears
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Excellent gear and synchro protection, balanced slipperiness for easier shifting in cold climates
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Excellent for high- and low-mile transmissions
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Compatible with petroleums and other synthetics
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75W90 GL-4 gear oil (similar to SAE 5W40/10W40 engine oil viscosity)
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Popular in Nissan, Mazda, Mitsubishi, VW/Audi, Lotus Elise/Exige, Toyota
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Offers quicker shifts, perfect synchronizer coefficient of friction
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Safe for brass synchros, as it lacks the reactive sulfurs found in most GL-5 oils that cause damage
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High performance gear protection and longer synchro life
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Eliminates notchy shifting, even when cold
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Satisifies the gear oil viscosity requirements of 75W, 80W and motor oil viscosities of SAE 40, 10W40, and 15W40
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Recommended for GL-1, GL-3, and GL-4 applications, as well as where most special synchromesh fluids are specified
MORE TECHNICAL INFORMATION
| API Service Class | GL 4 |
| SAE Viscosity Grade (Motor Oil) | 15W40 |
| SAE Viscosity Grade (Gear Oil) | 75W90 |
| Vis @ 100°C, cSt | 15.6 |
| Vis @ 40°C, cSt | 90 |
| Viscosity Index | 185 |
| Pour Point, °C | -45 |
| Pour Point, °F | -49 |
| Flash Point, °C | 240 |
| Flash Point, °F | 465 |
| Brookfield Viscosity @ -40°C, Poise | 320 |
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