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⚙️ Shift smarter, drive smoother — the synthetic ATF that keeps you ahead of the pack!
Red Line 30504 D4 Synthetic Automatic Transmission Fluid is a premium, multi-application fluid engineered for superior low-temperature shiftability and high thermal stability. Compatible with a wide range of automatic and manual transmissions, including popular OEM specs like Dexron III and Mercon V, it offers GL-4 level gear protection and extended drain intervals. Trusted by performance drivers since 1979, this synthetic ATF ensures smooth, reliable shifting and long-lasting transmission health.






| ASIN | B000CPI5XM |
| Best Sellers Rank | #6,542 in Automotive ( See Top 100 in Automotive ) #7 in Automotive Transmission Fluids |
| Brand | Red Line |
| Brand Name | Red Line |
| Container Type | Bottle |
| Country of Origin | USA |
| Customer Reviews | 4.8 out of 5 stars 1,045 Reviews |
| Global Trade Identification Number | 00083522305044 |
| Item Form | Oil |
| Item Weight | 1.7 Pounds |
| Item weight | 1.7 Pounds |
| Liquid Volume | 0.95 Liters |
| Liquid volume | 0.95 Liters |
| Manufacturer | Red Line |
| Material | Synthetic |
| Model Number | RED30504 |
| Number of Items | 1 |
| Number of Packs | 1 |
| Package information | Bottle |
| Part Interchange Info | 30504 |
| Part Number | 30504 |
| Recommended Uses For Product | For use in automatic and manual transmissions, power steering, racing transmissions |
| Recommended uses for product | For use in automatic and manual transmissions, power steering, racing transmissions |
| SAE J300 Viscosity Grade | 5W |
| Specific Uses For Product | Automatic and Manual Transmissions, Power Steering |
| UPC | 083522305044 |
| Unit Count | 1 Count |
| Viscosity | 5w |
L**P
Excellent produit !
Très bon produit, j'utilise ce produit exclusivement pour ma Corvette C6 depuis longtemps !
G**Y
Good
Matches 955 Cayenne transfer case fluid specs.
A**W
Super
Ich bin begeistert was der getriebeöl redline d4 atf leistet. Die Schalt Vorgänge sind deutlich weicher und sanfter geworden demnächst werden ich komplette öl Wechsel vornehmen. Tolle Arbeit an die amerikanische öl Industrie
F**L
Four Stars
Great for my Hurth gearboxes on my boat.
L**O
Easier shifting
Works great in my BMW Z3, only need 1 quart.
Trustpilot
3 weeks ago
1 week ago