Kia Optima 2017, Owner'S Manual, Page: 608 / 776

MAINTENANCE INTERVALS
Normal Maintenance Schedule - For Gasoline Engine [Except Europe (Including Russia)]
Number of months or driving distance, whichever comes first
Months
12 24 36 48 60 72 84 96
Miles×1,000 10 20 30 40 50 60 70 80
Km×1,000 15 30 45 60 75 90 105 120
MAINTENANCE ITEM
Spark plugs
*10
Nu 2.0L CVVL Replace every 150,000 km (100,000 miles) or 120 months
Nu 2.0L MPI Replace every 150,000 km (100,000 miles) or 120 months
Theta II 2.4L GDI Replace every 150,000 km (100,000 miles) or 120 months
Theta II 2.4L MPI Replace every 45,000 km (30,000 miles) or 36 months
Theta II 2.0L
T-GDI
Replace every 75,000 km (50,000 miles) or 60 months
Automatic transaxle fluid (if equipped) No check, no service required
Manual transaxle fluid (if equipped)
*8
- - - I - - - I
Fuel tank air filter - I - R - I - R
Drive shaft and boots I I I I I I I I
Fuel additives (Gasoline)
*6
Add every 10,000 km (6,500 miles) or 6 months
Fuel filter (Gasoline) For China, Brazil - I - R - I - R
Fuel lines, hoses and connections - - - I - - - I
Vapor hose and fuel filler cap - - - I - - - I
Maintenance
8-22