Hyundai SP-IV automatic transmission fluid is specifically engineered to meet the precise friction, viscosity, and thermal requirements of these electronically controlled transmissions. Unlike older ATF formulas, SP-IV is a low-viscosity, fully synthetic fluid tailored for smooth shifting, reduced heat buildup, and better fuel efficiency.
Hyundai SP-IV Automatic Transmission Fluid
1. Hyundai Genuine SP‑IV Automatic Transmission Fluid
This is the official OEM fluid designed specifically for Hyundai and Kia models that require the SP-IV specification. If you want the exact formula recommended by the manufacturer, this is the safest and most reliable choice.
Key Features:
- Fully synthetic fluid engineered for Hyundai/Kia 6-speed automatics
- Provides optimal friction characteristics for smooth shifting
- Excellent thermal stability for high-temperature driving
- Reduces wear, foaming, and oxidation inside the transmission
- Ideal for maintaining warranty compliance
2. Aisin ATF SP‑IV
Aisin is one of the world’s largest transmission manufacturers, and its SP-IV-compatible formula is trusted for durability and high-performance operation. This is a strong premium alternative to OEM fluid.
Key Features:
- Specifically formulated to meet SP-IV requirements
- Provides consistent viscosity across extreme temperatures
- Enhanced anti-wear additives protect clutch packs and gears
- Designed for smooth shifting under heavy loads or stop-and-go traffic
- Made by a leading global transmission supplier
3. Valvoline Multi‑Vehicle ATF (SP‑IV Compatible)
Valvoline’s full synthetic multi-vehicle ATF is blended to meet multiple OEM standards, including SP-IV. It is a great option for drivers looking for strong performance, availability, and good value.
Key Features:
- Full synthetic formulation with excellent thermal resistance
- Compatible with Hyundai/Kia SP-IV transmissions
- Helps reduce shudder and harsh shifts due to worn fluid
- Superior protection against varnish, deposits, and oxidation
- Often more affordable while still meeting required specs
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What Makes Hyundai SP-IV Fluid Different?
Hyundai SP-IV ATF is not just another generic automatic transmission fluid. It is formulated with advanced synthetic base oils and carefully tuned friction modifiers that allow the transmission’s torque converter clutch and internal clutch packs to operate with exceptional precision.
This matters because modern transmissions rely heavily on electronic control systems, solenoids, and finely calibrated pressure adjustments. Using the wrong fluid can throw off the delicate balance, resulting in rough shifting, delayed engagement, or even accelerated internal wear.
SP-IV has a lower viscosity than many traditional ATFs.
This allows the fluid to circulate more quickly at start-up, improving cold-weather performance and reducing friction. Lower viscosity also means improved fuel efficiency because the transmission encounters less resistance during operation.
At the same time, SP-IV fluid maintains a strong and stable viscosity when the transmission reaches high temperatures, preventing thermal breakdown and slippage.
Because of these differences, Hyundai explicitly states that SP-IV is not backward-compatible with older fluids such as SP-III or SP-II. If your vehicle requires SP-IV, the safest choice is always to use a fluid that clearly meets or exceeds the SP-IV specification.
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Why You Should Use SP-IV Fluid
Using SP-IV fluid provides several key benefits:
- Smoother gear changes: SP-IV is engineered to reduce shift shock and allow seamless transitions between gears.
- Longer transmission life: High-quality anti-wear additives help protect internal components.
- Reduced heat buildup: Synthetic base oils resist oxidation and maintain stability under high load.
- Better fuel efficiency: Low-viscosity fluid minimizes drag inside the transmission.
- Consistent performance in all temperatures: SP-IV stays fluid in cold climates and resists thinning in heat.
Routine maintenance using the correct fluid can easily extend your transmission’s lifespan by tens of thousands of miles. Many owners notice immediate improvement in shift quality after switching back to the proper SP-IV fluid, especially if their previous service used a generic ATF.
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How Often Should You Change SP-IV Fluid?
Although Hyundai often advertises its ATF as “lifetime,” real-world conditions tell a different story. Heat, towing, aggressive driving, and heavy traffic all degrade transmission fluid over time. Most transmission specialists recommend changing SP-IV ATF every:
- 60,000 miles for normal driving OR
- 30,000–40,000 miles for harsh conditions
Fresh fluid helps maintain smooth shifting and reduces long-term transmission repair costs.
FAQs
Is Dexron VI compatible with SP IV?
No, Dexron VI is not fully compatible with SP‑IV transmissions. While both are automatic transmission fluids, SP‑IV has unique friction and viscosity properties specifically designed for Hyundai and Kia 6-speed automatics. Using Dexron VI may lead to shifting issues or long-term transmission wear.
What transmission fluid does Hyundai use?
Hyundai uses SP‑IV automatic transmission fluid for most of its 6-speed automatic transmissions. Some newer models may use SP‑IV‑RR or other manufacturer-specific fluids, but SP‑IV is the standard specification for ensuring proper operation and longevity.
What is Ravenol SP IV transmission fluid?
Ravenol SP‑IV is a high-quality, fully synthetic automatic transmission fluid formulated to meet the SP‑IV specification. It provides stable viscosity, smooth shifting, and strong protection against wear, oxidation, and foaming, making it a popular aftermarket choice for Hyundai and Kia vehicles.
Can I use regular ATF instead of ATF 4?
No, regular ATF is not a suitable replacement for ATF 4 (SP‑IV). SP‑IV fluids have specific friction and viscosity characteristics required by Hyundai/Kia transmissions. Using an incompatible ATF can cause shifting problems, clutch slippage, or damage over time.
What is ATF SP IV?
ATF SP‑IV is a fully synthetic automatic transmission fluid designed specifically for Hyundai and Kia 6-speed automatic transmissions. It is formulated to provide optimal friction, smooth shifting, thermal stability, and long-term protection for transmission components.
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Final Thoughts
Hyundai SP-IV automatic transmission fluid plays an essential role in keeping your vehicle’s transmission performing at its best. Unlike older ATFs, SP-IV is a precision-engineered, fully synthetic fluid designed specifically for modern Hyundai and Kia transmissions. Using the correct fluid ensures smooth shifting, better fuel economy, and long-term durability.
Whether you choose the OEM Hyundai Genuine SP-IV fluid, a premium aftermarket option like Aisin ATF SP-IV, or a reputable synthetic blend like Valvoline’s SP-IV-compatible ATF, sticking to the correct specification is crucial. Transmission repairs are expensive; proper fluid maintenance is one of the simplest ways to prevent problems and keep your vehicle running smoothly for years to come.
