I went ~90k on my first set of iridiums, and they still looked good when I pulled and replaced them.
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I have a 2014 Grand Cherokee with hemi. I was told I have iridiums and that they are standard in all 2014 hemi's. Service dept at dealer checkd my VIN to veryify I had iridiums. He said they are good for 100,000 miles. Prior to 2014 only police package hemi's were equiped whth iridiums.
I already have it in my head that I want a 2020 Grand Cherokee so (I'm old and this will be my last hurrah)I'm sure I'll have the new one before I reach 100,000 miles on this one.
Maybe by 2020 they will wise up and produce another Commander. I'd buy one in a heartbeat.
HT
Got a friend (he's from Liberia, and not really up on Jeeps!!!) with an '06 5.7 WK that needs plugs. I'm gonna help him, so any recommendations is welcome!
BUMP, are you guys changing your plugs at 30k?
just changed mine at 90k, just rolled 120k
Yeah I change mine every 30k.... I'll be hitting 60k on the odometer in about 2 months
I changed mine at around 90k, and dang were they shot, haha :D I have no idea is any of the previous owners had ever changed the plugs. 30k seems reasonable to me. Heck why not? <$20 for Champion stock replacements.
If you are running OEM copper plugs, change every 30k miles. If you run iridiums, you can change every 100k miles!
I have the 4.7 with the copper plugs. can somebody help me verify what the gap should be? I am double checking. thanks