75W140NS GL-5 Gear Oil
Red Line 75W140NS GL-5 Gear Oil is a fully-synthetic, ester-based gear lubricant engineered for demanding historic and vintage manual transmissions and racing limited-slip differentials. This formulation contains extreme pressure (EP) additives for maximum gear protection but is intentionally free of friction modifiers, making it suitable for synchro-equipped gearboxes that require minimal slipperiness for proper operation.
- Formulated without friction modifiers to ensure ideal synchronizer function—recommended for mid-1930s to early-1950s synchro-equipped transmissions in cars and trucks.
- Addresses noisy or rough shifting in A-833 Dodge/Plymouth 4-speed transmissions (1964–1969).
- Can be blended with 75W90NS to increase viscosity for noisy transmissions.
- Used in clutch-type limited-slip differentials in racing for maximum lock-up; users may add limited slip friction modifier as needed to fine-tune slippage.
- Non-corrosive and safe for all synchronizer materials.
Technical Details
| API Service Class | GL 5+ |
|---|---|
| SAE Viscosity Grade (Gear Oil) | 75W140 |
| Kinematic Viscosity @ 100°C (cSt) | 26.9 |
| Kinematic Viscosity @ 40°C (cSt) | 179 |
| Viscosity Index | 188 |
| Pour Point (°C) | -45 |
| Pour Point (°F) | -49 |
| Brookfield Viscosity (Poise @ -40°C) | 1200 |
OEM Compatibility
- API GL-5 & MT-1
- MIL-PRF-2105E
- SAE J2360
- Historic & Vintage Synchro Transmissions
- Rockwell 0-76-C
- Used in SAE 140 Applications
Vehicle Compatibility
| Brand | Model | Generation / Chassis | Engine |
|---|---|---|---|
| Dodge | A-833 4-SPEED TRANSMISSIONS (1964–1969) | - | - |
| Plymouth | A-833 4-SPEED TRANSMISSIONS (1964–1969) | - | - |
Gearbox oil Red Line 75W140 NS GL-5 0.94l RD-57109
26.56€
26.29€
Excl. VAT: 21.73€
EU Shipping — No Import Taxes
| Brand | Model | Generation | Engine |
|---|---|---|---|
| Dodge | A-833 4-SPEED TRANSMISSIONS (1964–1969) | - | - |
| Plymouth | A-833 4-SPEED TRANSMISSIONS (1964–1969) | - | - |
Red Line