Spark Plugs ? ? ? - Jeep Commander Forums: Jeep Commander Forum
Regular Service / Maintenance This section contains discussion about regular service and maintenance (upkeep) of your Jeep Commander

Reply
 
LinkBack Thread Tools Display Modes
post #1 of 11 (permalink) Old 07-25-2012, 06:39 PM Thread Starter
Junior Member
Points: 1,898, Level: 25 Points: 1,898, Level: 25 Points: 1,898, Level: 25
Level up: 98% Level up: 98% Level up: 98%
Activity: 0% Activity: 0% Activity: 0%
 
Join Date: Apr 2012
Location: Durango, CO and Naples, FL
Posts: 7
Spark Plugs ? ? ?

OK, I am seeking the honest, down to earth truth. I have read all sides of this issue and would like to know if OEM spark plugs are the right choice for a 2008 Commander Overland with the 5.7 Hemi. Some posts say the "exotic" plugs (iridium,platinum, etc) cause the engine to perform poorly and others say it performs better. Go figure. Does anybody have the "truth"? Thanks in advance.
danj239 is offline  
Sponsored Links
Advertisement
 
post #2 of 11 (permalink) Old 07-25-2012, 06:48 PM
Super Moderator
Points: 59,499, Level: 100 Points: 59,499, Level: 100 Points: 59,499, Level: 100
Level up: 0% Level up: 0% Level up: 0%
Activity: 83% Activity: 83% Activity: 83%
 
jeep5253's Avatar
 
Join Date: Jun 2006
Own a Commander?: Yes
Model year: 2006
Trim Package: Limited
Power-Train: 5.7L V-8 Hemi
4WD
If 4WD - system: QD-II
Posts: 14,900
Personally, I would (and do) use the OEM plugs on the HEMI.

2006 Steel Blue 5.7L HEMI Limited 4x4 Build Date: June 9, 2006 Hour 14
Interior: Dark Slate/Light Graystone with Saddle Brown Leather Seats
Quadra-Drive II, NAV, DVD, Trailer Tow Group IV, Off-Road Group II, Remote Start, UConnect, Rear Backup Camera, Chrome Wheels,
Magnaflow cat-back exhaust, Daytime Running Lights enabled, 2" Rough Country Lift with 265/70R17 Goodyear Wrangler AT/S
jeep5253 is offline  
post #3 of 11 (permalink) Old 07-25-2012, 07:06 PM
Member
Points: 2,765, Level: 32 Points: 2,765, Level: 32 Points: 2,765, Level: 32
Level up: 10% Level up: 10% Level up: 10%
Activity: 0% Activity: 0% Activity: 0%
 
samwise70's Avatar
 
Join Date: Apr 2010
Location: Atco, NJ
Posts: 60
I tried iridium plugs and they did nothing but throw codes. I went back to oem and not a problem. They do have a shorter life, But you will remain headache free. I was told that the iridiums are actually a cooler plug. The computer sees it as a misfire. Don't quote me on it, but thats what i've been told

2006 COMMANDER 4.7, BLACK, MEDIUM GREY INTERIOR. RC 2" LIFT WITH RR 3/8 FRONT SHIMS. FRONT HOOKS, REAR HITCH. KELLY SAFARI TSR'S 265/75/17, AIRFLOW SNORKEL, SUPERCHIPS FLASHPAQ 3875. DYNOMAX VT MUFFLER. Still waiting on my superlift...
samwise70 is offline  
 
post #4 of 11 (permalink) Old 07-25-2012, 10:33 PM
Senior Member
Points: 8,101, Level: 60 Points: 8,101, Level: 60 Points: 8,101, Level: 60
Level up: 76% Level up: 76% Level up: 76%
Activity: 0% Activity: 0% Activity: 0%
 
Matt_'s Avatar
 
Join Date: Jun 2010
Location: NJ
Posts: 1,128
About 2 years ago we put some Bosch platinums in a Hemi XK at the shop.... damn thing barely made it out of the parking lot for the test drive.

Couldn't figure out what was wrong. Called a colleague at a local dealerships service dept and he recommended trying OEM plugs. Swapped them out and the thing ran like a champ.

Take it for what it's worth, but the only plug I'll run in MY jeeps are OEM spec.

I've never read a story of someone running OEM plugs and having issues, but there seems to be a 50/50 split of issues with fancy iridium/platinum/etc plugs. It's a gamble not worth taking IMO since actual engine "performance" between a good OEM copper plug and a good platinum won't be any different, the platinum will last longer, that's all.

-Matt
Matt_ is offline  
post #5 of 11 (permalink) Old 07-30-2012, 08:31 AM
Junior Member
Points: 1,820, Level: 25 Points: 1,820, Level: 25 Points: 1,820, Level: 25
Level up: 20% Level up: 20% Level up: 20%
Activity: 0% Activity: 0% Activity: 0%
 
Join Date: Feb 2010
Posts: 2
spark plugs

Quote:
Originally Posted by danj239 View Post
OK, I am seeking the honest, down to earth truth. I have read all sides of this issue and would like to know if OEM spark plugs are the right choice for a 2008 Commander Overland with the 5.7 Hemi. Some posts say the "exotic" plugs (iridium,platinum, etc) cause the engine to perform poorly and others say it performs better. Go figure. Does anybody have the "truth"? Thanks in advance.
truth on the internet?
Hello,
I am the tech manager at Autolite spark plugs. We have a ton of technical video under the learn more tab on our website, www.autolite.com. You can learn all about the differences in plug metalurgy, how plugs are matched to OE and much more. I have installed Autolite XP Iridium spark plugs in many hemi powered vehicles with great results. Not all plug companies do a great job of matching the OE heat range, Autolite does. But, watch the videos and learn for yourself. they are technical video, not marketing bs.
motorking is offline  
post #6 of 11 (permalink) Old 07-30-2012, 10:06 PM
Senior Member
Points: 16,293, Level: 81 Points: 16,293, Level: 81 Points: 16,293, Level: 81
Level up: 89% Level up: 89% Level up: 89%
Activity: 0% Activity: 0% Activity: 0%
 
lekmedm's Avatar
 
Join Date: Mar 2008
Location: Annandale, NJ
Own a Commander?: Yes
Model year: 2007
Trim Package: Overland
Power-Train: 5.7L V-8 Hemi
4WD
If 4WD - system: QD-II
Current Mileage: 232,700
Posts: 953
Garage
I have been running Autolite iridiums in my hemi for almost 80k miles now. Never a problem. Good mileage. Lots 'o power!!!

Sent from my SAMSUNG-SGH-I727 using AutoGuide.Com Free App

2007 Jeep Commander Overland - Steel Blue
5.7L Hemi + QDII
4" SuperLift
Rusty's adjustable rear UCAs
Caroline Driveline front drive shaft
285/70/17 Cooper Discoverer ST Maxx
Activated: DRLs + Tilting Mirrors
Autolite Iridiums
Cobra LX 29 LE CB with Firestik antenna
Rear fog lights
Mopar Grille Guard with Rugged Ridge HID driving lights
Sylvania Silverstars Ultra hi/low


"4 wheel drive does not mean 4 wheel stop!" -Lee Goldberg, WABC TV weatherman
lekmedm is offline  
post #7 of 11 (permalink) Old 02-09-2013, 06:40 AM
Member
Points: 1,767, Level: 24 Points: 1,767, Level: 24 Points: 1,767, Level: 24
Level up: 67% Level up: 67% Level up: 67%
Activity: 0% Activity: 0% Activity: 0%
 
Join Date: Nov 2012
Posts: 37
I always stick to OE, there are way to many accounts of fancy plugs just screwing things up. Also keep in mind regardless of how they are marketed the only advantage they have is lasting longer than copper. Get OE plugs and change at appropriate interval.
Centcomm87 is offline  
post #8 of 11 (permalink) Old 03-07-2013, 10:03 AM
Senior Member
Points: 7,085, Level: 55 Points: 7,085, Level: 55 Points: 7,085, Level: 55
Level up: 68% Level up: 68% Level up: 68%
Activity: 0% Activity: 0% Activity: 0%
 
Join Date: Feb 2010
Posts: 172
THe Hemi Shop on Long ISland actually offeres Iridiums, as an upgrade over the stock coppers. They do a lot of work on 5.7 and 6.1 engines and are very highly regarded in the area. Just my 2 cents...

2010 Jeep Commander Sport Hemi
bigpav7 is offline  
post #9 of 11 (permalink) Old 03-07-2013, 11:34 AM
Senior Member
Points: 27,950, Level: 98 Points: 27,950, Level: 98 Points: 27,950, Level: 98
Level up: 60% Level up: 60% Level up: 60%
Activity: 0% Activity: 0% Activity: 0%
 
07JeepXK's Avatar
 
Join Date: Sep 2007
Location: Orchard Park, NY
Posts: 6,311
I've only got the 4.7 liter V8 in my Commander and have tried every ply on the market. Back to running oem champions as the others sucked in my motor




2007 4.7 Liter XK | Front OME MD Springs w/Superlift Preload Spacer | Rear 4" Superlift Springs | Bilstein 5125 Rear Shocks | JBA UCA's | Rusty's Rear Adjustable Track Bar | Black Rock 997 Wheels | Fred Goeske 1/4 Inch Wheel Spacers | 305/70R17 Goodyear Wrangler MT/R w/Kevlar | Airflow Snorkel | Flowmaster 40 Series Muffler | Superchips Flashpaq | Mopar Skids | 4xGuard Belly Guard | American Rebel Rear Diff Cover | Rear Powertrax No-Slip | Front E-Locker | Rear Heat/AC Delete
07JeepXK is offline  
post #10 of 11 (permalink) Old 03-07-2013, 05:51 PM
Member
Points: 1,707, Level: 24 Points: 1,707, Level: 24 Points: 1,707, Level: 24
Level up: 7% Level up: 7% Level up: 7%
Activity: 0% Activity: 0% Activity: 0%
 
Getty59's Avatar
 
Join Date: Jan 2013
Posts: 31
Original= headache free

2007, 4.7L, Trail Rated,Rocky Mountain Edition, K&N, Silverstar Ultra, LED interior!
Getty59 is offline  
Sponsored Links
Advertisement
 
Reply

  Jeep Commander Forums: Jeep Commander Forum > Jeep Commander Discussion > Regular Service / Maintenance

Quick Reply
Message:
Options

Register Now



In order to be able to post messages on the Jeep Commander Forums: Jeep Commander Forum forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.

Password:


Confirm Password:
Email Address
Please enter a valid email address for yourself.

Email Address:
OR

Log-in











Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page
Display Modes
Linear Mode Linear Mode



Posting Rules  
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On

 
For the best viewing experience please update your browser to Google Chrome