wow
tact is your middle name, right?
i never knew that the 4.0 in my Jeep was designed around 6-spark plugs all of the same brand. imagine -- if they "sponsored" more than one brand of plugs, we'd have a pretty weird looking engine - one cylinder designed around this plug, another cylinder designed around that plug, so on and so forth until all the sponsored plugs were satisfied, and then ---- what? i wonder if it would even run...
I do believe that you missed the nut in the OP's question; he needs new plugs, is probably very much aware of what the manual suggests, or RECOMMENDS, and is just asking around to see if anyone else out there is using something ELSE and if so, what is their experience with them. I agree, a search of some kind, even using lame search criteria, would have yielded about a gazillion threads, but many times the search function is not working properly. But really I don't know why folks respond with hostility to threads they hate to see -- why read it, and why respond? It isn't as though someone, anyone, was or is spreading stuff they heard from Miss Information, y'know? Just sparky the plug sort of stuff, all a matter of personal preference and/or experience regarding their own Jeep.
As politely and as kindly as I can state it, your response was just plain rude and offensive. And, rather indefensible. But hey, I suppose you've got as much right to say what you want to say as, well gee, the original poster has a right to ASK what he wants to ask, wouldn't you figure? So before you get your pants in a wedgie about me saying this about your response, please consider that nothing, virtually nothing, in my post regarding YOU is anywhere near as astringent as YOUR response to the OP. Main difference is, he didn't necessarily deserve it.