






⚙️ Shift smoother, last longer — the gear oil pros trust!
Red Line 50305 MT-90 is a premium synthetic 75W-90 gear oil designed for manual transmissions and transaxles. It ensures superior gear protection, extends synchronizer life, and delivers smoother, quicker shifts even in cold conditions. Compatible with GL-1, GL-3, and GL-4 applications, it’s safe for brass synchros and ideal for a wide range of vehicles. Packaged in a convenient 4-gallon set, it’s the go-to lubricant for professionals demanding reliability and performance.






| Material | Synthetic |
| Brand | Red Line |
| Package Information | Pail |
| Liquid Volume | 512 Fluid Ounces |
| Item Weight | 10 Pounds |
| Recommended Uses For Product | Lubricant |
| Viscosity | 75W90 |
| Upper Temperature Rating | 3E+2 Degrees Fahrenheit |
| Specific Uses For Product | Manual transmissions and transaxles, specific vehicle models (Nissan, Mazda, Mitsubishi, VW/Audi, Lotus Elise/Exige, Toyota, Mendeola), off-road applications |
| Item Form | Fluids,Liquid,Oil |
| Global Trade Identification Number | 00083522503259 |
| Manufacturer | Red Line |
| Unit Count | 512.0 Fluid Ounces |
| UPC | 083522503259 |
| SAE J300 Viscosity Grade | 75W-90 |
| Number of Items | 4 |
| Item Weight | 10 pounds |
| Product Dimensions | 15 x 12 x 10 inches |
| Item model number | 50325 |
| Is Discontinued By Manufacturer | No |
| Manufacturer Part Number | 50325 |
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