Sparkplugs at 30K???? - Jeep Commander Forums: Jeep Commander Forum
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post #1 of 5 (permalink) Old 08-13-2007, 11:31 AM Thread Starter
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Sparkplugs at 30K????

I was looking at my matience booklet and Jeep recommends replacing the sparkplugs at 30K miles? What the hell? It has coil over plug ignition. I dont know of any manfacture that still requires plugs at 30k. Anyone let it go farther?
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post #2 of 5 (permalink) Old 08-13-2007, 12:27 PM
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Re: Sparkplugs at 30K????

I took mine in for 30K service a few months ago and asked to have this done, but my dealer said the plugs were fine (waste of money to have them changed at 30K). I guess I'll check them at 40K for gap & appearance.
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post #3 of 5 (permalink) Old 08-13-2007, 12:28 PM
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Re: Sparkplugs at 30K????

You only need to change the plugs at 30k on the Hemi.
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post #4 of 5 (permalink) Old 08-13-2007, 07:54 PM
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Re: Sparkplugs at 30K????

We have not replaced ours (46K) and it goes back to dealership every 3K for service, they have not mentioned plugs to be replaced, can't wait to get that bill
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post #5 of 5 (permalink) Old 08-14-2007, 07:03 AM
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Re: Sparkplugs at 30K????

The Hemi has 16 sparkplugs. In my TJ where I use CHAMPION TRUCK PLUGS P/N 4412 I usually change them every 15k miles which is about a year and a half of driving. But those plugs are very inexpensive, I do it myself and takes only 6. I hadnt yet given any thought to when to change the Commander plugs but seems to me 30k miles is about the limit for most plugs. john
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