I’d love to read an intelligent explanation for that claim. :bloated:
I’ve never really read anything good about Bosch plugs, or anything bad about NGK’s. I searched on what plugs to run in both my current car ('01 Jetta) and last car ('93 Sentra.) Both times I came up with boatloads of claims that the cars misfired on Bosch’s and ran fine on NGK.
So yeah, +1 for NGK. Single electrode, copper.