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⚙️ Shift into the fast lane with Red Line’s ultimate gear oil!
Red Line 50104 is a full synthetic 75W85 GL-5 gear oil designed specifically for hypoid limited slip differentials. It features advanced friction modifiers for clutch-type LSDs, ensuring smooth operation without additional additives. Compatible with a wide range of vehicles including BMW, Ford, Lexus, and popular in high-performance racing applications, this 1-quart bottle delivers superior thermal stability, wear protection, and long-lasting performance trusted since 1979.






| ASIN | B000J3G8KE |
| Best Sellers Rank | #1,556 in Automotive ( See Top 100 in Automotive ) #3 in Gear Oils |
| Brand Name | Red Line |
| Container Type | Bottle |
| Customer Reviews | 4.9 4.9 out of 5 stars (1,337) |
| Global Trade Identification Number | 00083522501040 |
| Included Components | 75W85 GL-5, Full Synthetic Gear Oil |
| Item Form | Oil |
| Item Type Name | ENGINE OIL |
| Item Weight | 2 pounds |
| Liquid Volume | 32 fluid ounces |
| Manufacturer | Red Line |
| Material | Synthetic |
| Model Number | RED50104 |
| Number of Items | 1 |
| Number of Packs | 1 |
| Part Number | 50104 |
| Recommended Uses For Product | Vehicle |
| Specific Uses For Product | Vehicle |
| UPC | 083522501040 |
| Unit Count | 32 Fluid Ounces |
| Viscosity | 75W85 |
| Warranty Description | LIMITED WARRANTY |
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