Dodge 2013 Challenger - Owner Manual - Manual (Page 489)

Component Fluid, Lubricant, or Genuine Part
Spark Plugs – 3.6L Engine We recommend you use MOPAR® Spark Plugs (Gap
0.043 in [1.1 mm]).
Spark Plugs – 5.7L Engine We recommend you use MOPAR® Spark Plugs (Gap
0.043 in [1.1 mm]).
Fuel Selection (3.6L and 5.7L Engine – Automatic
Transmission)
87 Octane Acceptable — 89 Octane Recommended
Fuel Selection (5.7L Engine – Manual Transmission) 91 Octane
Chassis
Component Fluid, Lubricant, or Genuine Part
Manual Transmission – If
Equipped
We recommend you use MOPAR® ATF+4® Automatic Transmission
Fluid.
Automatic Transmission – If
Equipped
Use only MOPAR® ATF+4® Automatic Transmission Fluid.
Failure to use ATF+4® fluid may affect the function or performance of
your transmission. We recommend MOPAR® ATF+4® fluid.
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MAINTAINING YOUR VEHICLE 487