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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 |
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