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⚙️ Shift smoother, drive smarter — the universal ATF that keeps you ahead.
Castrol Transmax ATF/CVT Universal is a premium full-synthetic transmission fluid engineered for both stepped automatic and continuously variable transmissions. Featuring Castrol’s Smooth Drive Technology, it delivers enhanced friction durability, superior high-temperature oxidation resistance, and outstanding copper corrosion protection. Compatible with a wide range of vehicles from North America, Europe, and Asia, this 1-gallon fluid ensures smooth, reliable shifting and long transmission life, making it the go-to choice for professional-grade maintenance and DIY enthusiasts alike.




| ASIN | B093R9YZ75 |
| Best Sellers Rank | #1,298 in Automotive ( See Top 100 in Automotive ) #4 in Transmission Fluids |
| Brand | Castrol |
| Brand Name | Castrol |
| Container Type | Bottle |
| Customer Reviews | 4.8 out of 5 stars 2,035 Reviews |
| Global Trade Identification Number | 00079191218860 |
| Included Components | 1 Gallon ATF |
| Item Form | Liquid |
| Liquid Volume | 1 Gallons |
| Manufacturer | Castrol |
| Material | Synthetic |
| Model Number | 15E0C8 |
| Number of Items | 1 |
| Package Information | Bottle |
| Part Number | 15E0C8 |
| Recommended Uses For Product | Automotive |
| Specific Uses For Product | Smooth Transmission Performance, High-Temperature Resistance |
| UPC | 079191218860 |
| Unit Count | 128.0 Fluid Ounces |
| Viscosity | 32 centistokes |
E**S
Perfect transmission fluid for My Nissan Maxima 2018 CVT
Perfect transmission fluid for My Nissan Maxima 2018 CVT I’ve used Castrol Transmax ATF/CVT Universal Automatic Transmission Fluid on my 2018 Nissan Maxima, and it’s been excellent. After the change, the CVT felt smoother, with seamless acceleration and no hesitation. The driving experience became noticeably quieter and more consistent. If you have a Nissan CVT that needs frequent servicing, this fluid fits the bill. It’s convenient to keep on hand, works reliably, and the 1-gallon jug is the right size for a complete service without leaving you short. The pour is clean and controlled, which helps avoid messy spills in the driveway. I still recommend double-checking your owner’s manual to confirm compatibility, as some transmissions can be picky about fluid type. But for my Maxima, it’s been a great match. Bottom line: For Nissan CVTs that need regular maintenance, Castrol Transmax delivers smooth performance, good value, and dependable results every time.
N**N
Perfect for a Toyota Transmission Flush
I picked up this 3-pack for a full transmission flush on my Toyota, and it was exactly what I needed. The fluid works really well, and you can tell it’s high-quality stuff. Buying it in the gallon 3-pack is definitely the way to go if you're doing a complete flush rather than just a simple drain and fill it gives you plenty of fluid to get the job done right without running back to the store. My car is shifting smoothly, and the price for the bundle is hard to beat. If you’re a DIYer looking to maintain your Toyota, this is a solid choice!
Y**A
Castrol Transmax ATF/CVT Transmission Fluid – Smooth Performance and Reliability
I am very satisfied with Castrol Transmax ATF/CVT transmission fluid. It works great and helps improve the smoothness of gear shifts, making the driving experience more comfortable and stable. After using it, I noticed the transmission feels more responsive and quieter. It provides good protection and helps reduce wear, which is very important for extending the life of the transmission system. The quality is excellent, as expected from Castrol. It performs well under different driving conditions and temperatures without any issues. It also gives me confidence that my vehicle is properly maintained. Overall, this is a reliable and high-quality transmission fluid. I would definitely recommend it for anyone looking to maintain or improve their vehicle’s transmission performance
M**N
Excellent CVT NS3 fluid for a great price
The is rated NS3 for my 2020 Infiniti QX60 CVT. The Nissan stuff is ridiculously expensive in comparison. After the drain, refill and filters change, the car shifts just fine. At 38,500 (mostly freeway) miles on the car, the old fluid was quite clean and there was very little residue on the three magnets. I probably could have gone to 60,000 miles without issue, but I'd rather baby his thing since I plan on keeping it for 10 or more years total.
M**M
Smooth Shifting and Great Quality Fluid
This transmission fluid works exactly as expected. I used it for a fluid change and immediately noticed smoother shifting and quieter operation. It’s nice having a universal ATF/CVT fluid that works for multiple vehicles, so I can keep one jug on hand for different jobs. The gallon size is convenient, and the quality of Castrol products never disappoints. No leaks, no slipping—just consistent performance. Definitely worth the price for reliability and protection.
D**O
Tran oil change
Needed to change transmission oil
L**8
As expected
Works fine
T**S
Reasonably priced
Fair price
O**Z
Excelente
Lo use para Suzuki Swift transmisión CVT en las especificaciones de la página dice que sirve igual que la 3309
Trustpilot
2 weeks ago
2 days ago