I've only run NGKs in my sled, except it may have had Champion plugs in it when I got it. Same with the old Indys I've tinkered on. Never seen one come apart like this, but I haven't bought a new set for a while, so maybe it's a recent run that's bad. I've run NGK plugs in a couple cars without issue too (although they don't seem to last as long as some). Hard to tell from reading through the posts here, but seems like this is happening mostly with plugs that have been sourced recently; seems at least two cases were OE plugs, can anyone confirm they've had plugs they bought fail? If so, when purchased?
Anyway, like 2XM3, I use and so far love the BPR9EIX. I've had issues starting my sled after rolling over in the past, but had to roll it over a couple times this season and it always fires back up after a handful of pulls. I wouldn't say NGK are the greatest, but they're pretty good. Autolite used to be the go-to for old V-8s and such, I think a lot of the stuff they make is pretty low-grade anymore. Haven't run Champion too much, sounds like they're also a one-time standard that's gone over the hill. Unless this is just the tip of the iceberg, I'd still say NGK is the best bet, but I'd like to know what's going on here.
