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⚙️ Shift smarter, not harder — gear oil that keeps you ahead of the pack!
Red Line 50504 MT-85 75W85 GL-4 Gear Oil is a premium manual transmission lubricant designed for superior gear and synchro protection. Its advanced formula enables quicker shifts, especially in cold climates, while being safe for brass synchros. Trusted by enthusiasts and professionals alike, it’s compatible with a wide range of vehicles including Nissan 350Z/370Z, Mitsubishi Evolution, Hyundai, Kia, and Quaife synchro manuals. Since 1979, Red Line has delivered uncompromising quality and performance.






| ASIN | B004D4URV6 |
| Best Sellers Rank | #42,144 in Automotive ( See Top 100 in Automotive ) #500 in Automotive Oils |
| Brand Name | Red Line |
| Container Type | Bottle |
| Customer Reviews | 4.8 4.8 out of 5 stars (837) |
| Global Trade Identification Number | 00083522505048 |
| Included Components | (1063027) MT-85 75W85 GL-4 GEAR OIL - QUART |
| Item Form | Oil |
| Item Type Name | ENGINE OIL |
| Item Weight | 1.95 Pounds |
| Liquid Volume | 32 Fluid Ounces |
| Manufacturer | Red Line |
| Material | Polyol Ester |
| Model Number | RED50504 |
| Number of Items | 1 |
| Part Number | 50504 |
| Recommended Uses For Product | transmission oil |
| SAE J300 Viscosity Grade | 5W-30 |
| Specific Uses For Product | Differential oil, final drive oil, gear oil, transfer case fluid, Nissan 350Z and 370Z, Mitsubishi Evolution, Hyundai, Kia, Quaife synchro manual trans applications |
| UPC | 083522505048 |
| Unit Count | 32 Fluid Ounces |
| Viscosity | 75W85 |
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