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⚙️ Keep your transmission future-proofed with Castrol TranSynd 668 – where endurance meets elite performance!
Castrol TranSynd 668 is a premium full-synthetic automatic transmission fluid engineered specifically for Allison heavy-duty transmissions. It offers up to 300,000 miles extended drain intervals, TES 668 certification, and advanced shear stability to protect gears and clutches, ensuring superior anti-shudder durability and friction control for long-lasting, reliable transmission performance.




| ASIN | B0977Q8S49 |
| Best Sellers Rank | #24,270 in Automotive ( See Top 100 in Automotive ) #77 in Transmission Fluids |
| Brand Name | Castrol |
| Container Type | Pail |
| Customer Reviews | 4.7 4.7 out of 5 stars (336) |
| Global Trade Identification Number | 00079191219638 |
| Included Components | Transmission Fluid |
| Item Form | Liquid |
| Item Weight | 38 pounds |
| Liquid Volume | 640 fluid ounces |
| Manufacturer | Castrol |
| Material | Synthetic |
| Model Number | 15E2E0 |
| Number of Items | 1 |
| Number of Packs | 1 |
| Part Number | 15E2E0 |
| Recommended Uses For Product | Automotive |
| SAE J300 Viscosity Grade | 5W-40 |
| Specific Uses For Product | Specific vehicle and transmission types, enhancing performance and longevity |
| UPC | 079191219638 |
| Unit Count | 640 Fluid Ounces |
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