






⚙️ Shift smarter, not harder — gear up with Red Line!
Red Line 50304 MT-90 is a premium 75W-90 GL-4 manual transmission lubricant designed to protect gears and extend synchronizer life. Its advanced formula ensures quicker, smoother shifts even in cold conditions, while being safe for brass synchros by avoiding harmful reactive sulfurs. Trusted since 1979, this 4-quart pack delivers reliable performance for GL-1, GL-3, and GL-4 applications, making it the go-to choice for discerning gearheads and professionals alike.






| Brand | Red Line |
| Package Information | Bottle |
| Liquid Volume | 128 Fluid Ounces |
| Item Weight | 2 Pounds |
| Viscosity | 75W-90 |
| Item Form | Oil |
| Manufacturer | Red Line |
| Unit Count | 128.0 Fluid Ounces |
| Number of Items | 4 |
| Model | (1063017) MT-90 75W90 GL-4 - QUART |
| Item Weight | 2 pounds |
| Product Dimensions | 4 x 4 x 9 inches |
| Item model number | 50304 |
| Manufacturer Part Number | 50304 |
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