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⚙️ Shift smarter, drive smoother — the fluid that keeps you ahead.
Castrol Transmax DEX/MERC Automatic Transmission Fluid is a premium full-synthetic ATF engineered for both stepped and continuously variable transmissions worldwide. Featuring advanced friction durability, high-temperature oxidation resistance up to 175°C, and superior copper corrosion protection, it ensures smooth shifting and long-lasting transmission health. Ideal for professional workshops and discerning drivers seeking reliable, multi-vehicle compatibility in one bottle.




| ASIN | B00DILUBL6 |
| Best Sellers Rank | #16,102 in Automotive ( See Top 100 in Automotive ) #54 in Transmission Fluids |
| Brand Name | Castrol |
| Container Type | Bottle |
| Customer Reviews | 4.8 4.8 out of 5 stars (2,241) |
| Global Trade Identification Number | 00079191335208 |
| Included Components | 1 Gallon Jug of Automatic Transmission Fluid |
| Item Form | Liquid |
| Item Type Name | Automatic Transmission Fluid |
| Liquid Volume | 128 Fluid Ounces |
| Manufacturer | Castrol |
| Material | Calcium Sulfonate, Molybdenum Disulfide |
| Model Number | 03520 |
| Number of Items | 1 |
| Part Number | 03520 |
| Recommended Uses For Product | Automotive |
| SAE J300 Viscosity Grade | 5W-30 |
| Specific Uses For Product | Automatic Transmission Maintenance, Vehicle Compatibility, Performance Improvement |
| UPC | 079191335208 |
| Unit Count | 128.0 Fluid Ounces |
| Upper Temperature Rating | 175 Degrees Celsius |
| Viscosity | 5w-30 |
| Warranty Description | 3 months |
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