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Red Line 50304 MT-90 is a premium synthetic 75W-90 GL-4 manual transmission and transaxle lubricant designed to deliver superior gear protection, extend synchro life, and enable smoother, quicker shifts even in cold conditions. Compatible with GL-1, GL-3, and GL-4 specs, it’s safe for brass synchros and trusted by enthusiasts since 1979.






| ASIN | B003P550IE |
| Best Sellers Rank | #33,840 in Automotive ( See Top 100 in Automotive ) #59 in Gear Oils |
| Brand Name | Red Line Oil |
| Container Type | Bottle |
| Customer Reviews | 4.8 4.8 out of 5 stars (429) |
| Item Form | Fluids,Oil |
| Liquid Volume | 128 Fluid Ounces |
| Manufacturer | Red Line |
| Material | Synthetic |
| Model Number | 50304 |
| Number of Items | 4 |
| Part Number | 50304 |
| Recommended Uses For Product | Gear Oil |
| SAE J300 Viscosity Grade | 75W-90 |
| Specific Uses For Product | Manual transmissions and transaxles, particularly in vehicles from Nissan, Toyota, and Mazda, and in conditions that require gear protection, smooth shifting, and longer synchro life. |
| UPC | 737534816608 |
| Unit Count | 128.0 Fluid Ounces |
| Viscosity | 75W90 |
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