Hyundai’s six-speed automatic transmission requires a specific type of transmission fluid: Hyundai Genuine ATF SP-IV (SP4M). This specialized fluid is crucial for the proper operation and longevity of the transmission. A full fluid replacement requires approximately 7.08 quarts. It’s important to note the extra 0.08 quarts, indicating a complete drain and refill.
Unlike many other vehicles, Hyundai recommends checking the ATF SP4M fluid level when the transmission is hot. This is due to the fluid’s high expansion rate. Checking it cold could lead to an inaccurate reading and potential overfilling. Interestingly, some speculate that the absence of a traditional dipstick on these transmissions is to prevent accidental contamination with fluids like windshield washer fluid, given the small diameter of the fill tube. Adding fluid through this small tube can also be challenging, especially considering the large volume needed for a full replacement.
Historically, transmissions often only required a filter and partial fluid change (around four quarts). However, a complete fluid exchange in the Hyundai six-speed automatic necessitates more involved procedures.
While Hyundai Genuine ATF SP4M can be found online, shipping costs for this combustible fluid can be prohibitive. Negotiating with a local Hyundai dealer might yield a more favorable price, similar to how discounts can often be obtained on oil filters. Other manufacturers, like Honda, have historically had simpler transmission fluid maintenance procedures, often involving a dipstick and a straightforward four-quart replacement every 30,000 miles. Even simple tasks like removing an engine undercover can be cumbersome, highlighting the importance of quality, corrosion-resistant fasteners.
Direct observation of the old fluid being drained and the new fluid being added provides valuable insight into the condition of the transmission and ensures the correct procedure is followed. While older methods may seem outdated, they offer a level of transparency and control that can be reassuring.
