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โ๏ธ Shift to the future with Red Lineโs ultimate synthetic gear oil!
Red Line 50104 is a full synthetic 75W85 GL-5 gear oil formulated with polyol ester base stocks and friction modifiers designed specifically for hypoid limited slip differentials. It offers superior shear stability, oxidation resistance, and consistent viscosity across temperature ranges, making it ideal for high-performance and late-model vehicles. Trusted in both street and racing applications, it extends gear life, improves differential efficiency, and requires no additional friction modifiers for most LSDs.






| Asin | B000J3G8KE |
| Best Sellers Rank | #41,436 in Automotive (See Top 100 in Automotive) #530 in Automotive Oils |
| Brand Name | Red Line |
| Container Type | Bottle |
| Customer Reviews | 4.9 4.9 out of 5 stars (907) 4.9 out of 5 stars |
| Global Trade Identification Number | 00083522501040 |
| Included Components | 75W85 GL-5, Full Synthetic Gear Oil |
| Item Form | Oil |
| Item Type Name | ENGINE OIL |
| Item Weight | 907 g |
| 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 |
| Unit Count | 946.35 Milliliters |
| Upc | 083522501040 |
| Viscosity | Lightweight |
| Warranty Description | LIMITED WARRANTY |
User
Rear diff oil
I chose red line as it has the friction modifier already added which was perfect for my Mk3 focus rs. Great product Great delivery time.Very Happy ๐๐ป๐๐คช
User
Perfect
Got this for my severely overdue rear diff on my 19 Tacoma. Only driven about 100 miles since I changed the fluid with this stuff but it immediately got rid of my differential whine. I bought a pump on Amazon as well to pump it into my diff since it doesn't have a nozzle.Lots of people recommended this specifically. Little on the pricier side but you get what you pay for. I will continue to use this for my diff fluid changes.
User
Super
it is the correct product with all the amazing quality for my Jeep 2017 Grand Cherokee Laredo differential
User
Best!
The Best For Me!
User
Time will tell
I have an 2018 Nissan frontier and I put this fluid in my rear diff. Put over 2000KM with no issues.
Trustpilot
1 month ago
3 weeks ago