Dodge SRT Hellcat Owner's Manual page 560

558 MAINTENANCE SCHEDULES
Miles:
Or Months: 6 12 18 24 30 36 42 48 54 60 66 72 78 84 90 96 102 108 114 120 126 132 138 144 150
Or Kilometers:
Inspect and
replace the
X
PCV Valve if
necessary
Replace the
spark plugs –
6.2L Super- X X X X
charged Engine
**
Replace the
spark plugs – X
6.4L Engine **