Everything I've ever read says to use copper in the Hemi and nothing else. Not sure if that's the best answer but I've done 2 Hemi plug swaps and used oem NGK coppers both times. I'll also be doing the same when my truck is due for plugs in 8k miles.
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2014 Ram 1500 4x4 Outdoorsman
Retro Shop Custom FXR Projectors | Diablo inTune | Moe's 87mm TB | BT Oil Catch Can
Toyo A/T II Tires | Bilstein 5100 Front & Rear Shocks | AirLift 100 Air Bags
Bestop PowerBoards | RollBak Bed Cover | BedRug |
Threaded Mode
