Review on Autolite XP605 Iridium Spark Plug by Dan Dickey

Not the best, but really great spark plugs. I was looking for Iridium NGKs for my Buick. They just didn't exist for this machine. So I gravitated toward autolithic iridiums. I've thrown them on Dynasty before and they've been impressive. I don't do much OEM these days. There are things that are better than what the manufacturer uses. I don't expect these connectors to be much better than OEM other than the fact that iridium has better drain times than platinum. That's why I bought them.