⚙️ Shift to the future with Red Line’s ultimate gear oil performance!
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 and enhanced durability. Compatible with a wide range of premium vehicles and race-proven in high-performance transaxles, this gear oil offers superior thermal stability, reduced wear, and quieter operation, making it the go-to choice for professionals demanding peak drivetrain performance.






| ASIN | B000J3G8KE |
| Best Sellers Rank | #1,502 in Automotive ( See Top 100 in Automotive ) #2 in Gear Oils |
| Brand | Red Line |
| Date First Available | September 27, 2006 |
| Global Trade Identification Number | 00083522501040 |
| Is Discontinued By Manufacturer | No |
| Item Form | Oil |
| Item Weight | 2 pounds |
| Item model number | RED50104 |
| Liquid Volume | 32 Fluid Ounces |
| Manufacturer | Red Line |
| Material | Synthetic |
| Number of Items | 1 |
| Package Information | Bottle |
| Product Dimensions | 4 x 4 x 4 inches |
| Recommended Uses For Product | Vehicle |
| UPC | 083522501040 |
| Unit Count | 32.0 Fluid Ounces |
| Viscosity | 75W85 |
S**S
Great price and good quality
Works great Toyota Tacoma 2018
R**R
Red Line compared to Original gear oil during Servicing
I changed the rear differential fluid in my 2021 Kia Seltos Turbo at 50 K miles. The original oil was clear. Checked and clean the magnet. Small amount of powered filings on magnet, normal condition. Replaced with Redline75W85 GL-5 Full Synthetic Gear Oil. The original fluid had a fish smell to it, possibly regular gear oil. The Redline nearly no smell and the oil felt more slippery on my hand. After fluid install, I drove the car in traffic and the interstate. I felt like I had a little more power and easier acceleration from a Stop. I can tell the rear end is quieter as well. Next I will replace the transmission fluid. Being a dual clutch the Redline MT fluid will hopefully complement the performance increase. It should increase MPG a little. Very Good lubricant.
C**R
Great
Used for front and rear differential of my 2020 WK2/Grand Cherokee Trailhawk. No issues. Replace Red Lone fluid after 30k miles and it’s still pretty clean.
S**R
Suggest you try it!
Highly recommend the Redline products! Save money , and every bit as good as the Toyota brand fluid!
W**D
Deferencial oil.
Great old for your deferencial.
M**A
Great choice oem+
Nothing can beat red line fluid quality used for my 23 GV70 and my other mx5
P**6
Great Oil!
Meets toyota quality specs, but wish it came with a squeeze bottle. However I will take the quality oil and fill the diffs with a syringe than use the other major brand gear oils. Put in your 3rd gen tacoma and use with faith!
W**M
Get the good stuff
Good stuff
J**N
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 👌🏻😎🤪
A**E
Meiner Meinung nach das Beste Getriebe öl sehe hohe Laufruhe keine Geräusche und optimale Schmierung. optimal für Toyota Geländewagen 4 Runner und Land Cruiser
P**.
Everything as advertised.
N**A
I was looking for this fluid for my 2020 RAV4 I could not find the exact info any where, and the Toyota Dealer ship want to charge me an arm and leg so this was a really great option. Thanks
J**Y
Is what it says. Comes packaged well.
Trustpilot
2 weeks ago
2 months ago