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⚙️ Shift into the future with Red Line’s ultimate synthetic gear oil!
Red Line 57904 75W90 GL-5 Synthetic Gear Oil is a premium, high-performance lubricant designed for hypoid and limited-slip differentials in cars and light trucks. Featuring a synthetic polyol ester base and friction modifiers, it delivers exceptional wear protection, thermal stability up to 227°C, and optimized performance for racing and everyday driving. Trusted since 1979, this gear oil ensures smooth, efficient drivetrain operation without the need for additional friction additives.






| ASIN | B000CPCBF0 |
| Best Sellers Rank | 112,884 in Automotive ( See Top 100 in Automotive ) 217 in Gear Oils |
| Brand | Red Line |
| Brand Name | Red Line |
| Container Type | Bottle |
| Customer Reviews | 4.9 out of 5 stars 1,551 Reviews |
| Flash Point | 227 Degrees Celsius |
| Global Trade Identification Number | 00083522579049 |
| Included Components | Gear Oil |
| Item Form | Oil |
| Item Weight | 1.7 Pounds |
| Item weight | 1.7 Pounds |
| Liquid Volume | 946 Millilitres |
| Liquid volume | 946 Millilitres |
| Manufacturer | Yukon Gear & Axle |
| Material | Synthetic |
| Model Number | RED57904 |
| Number of Items | 1 |
| Number of Packs | 12 |
| Package information | Bottle |
| Part Number | 57904 |
| Recommended Uses For Product | Truck,Car |
| Recommended uses for product | Truck,Car |
| SAE J300 Viscosity Grade | 75W-90 |
| Specific Uses For Product | Differentials, Limited-slip differentials, Racing applications, Transmissions, Transaxles |
| UPC | 083522579049 |
| Unit Count | 1.0 count |
| Viscosity | 75W90 |
D**S
Good stuff
Great lubricant, lasted in the car for several years.
F**U
Very good product.
Exellent
I**N
Five Stars
great product for a great price.
J**A
Five Stars
best oil for my e46 differential. Recommend on many forums.
C**E
Five Stars
Great product, delivered on time !
K**Y
Red line
After hearing about it on a MX5 Forum, I tried it and found it an excellent product. Noticeable difference in the Differential Gear.
M**U
Top
Mejor aceite para mi diferencial
K**E
Premium Lubrication Performance for Demanding Applications
Red Line Gear Oil consistently delivers superior performance under high-stress operating conditions, making it an optimal choice for both professional and enthusiast-grade mechanical applications. Engineered with advanced synthetic formulations, this product offers exceptional thermal stability, shear resistance, and long-term protection across a wide range of gear systems. In real-world application, the oil has demonstrably improved drivetrain smoothness, reduced operating noise, and contributed to extended service intervals—resulting in reduced downtime and maintenance overhead. Its performance in high-load and high-temperature scenarios reinforces its reputation as a category leader in gear lubrication.
ね**こ
とても良い
デフ特有のガリガリ音も少なく効きもとてもいい感じです。 夏場やサーキット走行するにはもっと固めのでもいいかもしれませんが街乗りではとても十分です!
D**N
Quick and perfect
Excellent customer service, perfect product
X**2
シフトフィール向上
スバルサンバー4WDに入れていますが、ミッションオイル後のシフトフィールが良くなりました。
Trustpilot
1 month ago
1 month ago