Fluid · Coolant
Coolant
for 2018 Kia Optima 2.4L I4 · FWD
Fluid Type
Hyundai/Kia Long-Life ethylene glycol coolant
Spec: MS-591-08
Capacity
7.4qt
7 L
Drain & Refill
7.4 qt
7 L
Change Interval
120,000 mi
193,080 km
Data quality
Book-style estimate
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Notes
First change at 120k miles, then every 60k miles. Use premixed coolant or mix 50/50.