Resurrected an old thread to get a question answered.
I have a question as to what the OEM plugs are? Iridium or Platinum? I've been looking around for plugs and I'm seeing both Iridium and Platinum listed for the LS V8 on websites...
I've been looking for NGK plugs and they come in both as well as Denso plugs.
Any help would be great.
Factory plugs are NGK platinum.