Fluid · Coolant
Coolant
for 2026 Hyundai Ioniq 9 Single Motor RWD · RWD
Fluid Type
Hyundai Long Life Coolant MS591-08 (electric component coolant)
Spec: MS591-08
Capacity
10qt
9.46 L
Drain & Refill
8 qt
7.57 L
Change Interval
120,000 mi
193,080 km
Data quality
Calibrated
Platform-calibrated book-style value. Verification program ongoing.
Notes
Battery and power electronics thermal system; larger capacity for 110 kWh pack option; first change 120k miles, then every 60k