Posted by Texasmark1 on July 23, 2017 at 04:29:24 from (99.197.190.172):
In Reply to: Spark Plug Analysis posted by Royse on July 22, 2017 at 12:21:27:
I revisited this post after thinking about it for awhile per my first visit.
My previous 2 road pickups were an '07 4.7 and an '09 Hemi Ram. Both ran Champions. Both were a PIA to change plugs. Recommended change interval was 30k miles. They were the normal copper tipped plugs you buy for a couple of bucks. Engines ran fine, no complaints. What got me was that Chrysler-Damlier couldn't find it in their heart to install an iridium plug like my current Silverado that are listed in the owner's manual to go 100k miles on OEM equipment. Really chapped me the whole time I had them. Stories floated around the www that the engines were tuned for that plug and nothing else would work....after reading this post there may have been some truth to that rumor.
I had an ulterior motive in mind. 30k on the plugs, for a non-do-it-yourselfer, considering the majority of owners (cowboy Cadillacs...lots of them here in TX.) would drop their trucks off at their local Ram dealer to have them installed. Wink!
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