Hemi 5.7 Maintenance - DodgeForum.com


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Old 08-05-2015, 10:39 PM
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Hemi 5.7 Maintenance

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Old 01-14-2011, 07:58 PM
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Default Hemi 5.7 Maintenance

So I broke down, decided to have the dealership change my Oil as I haven't had the chance. Was cheap enough at $12 using my stuff, but then they handed me a piece of paper with things that "Should" be done "soon" as I'm just 800 miles under the 30k mark.

The sheet had roughly $700 worth of stuff that would be needed, I'm guessing most of it I can do myself but I'm wondering how much of it actually needs to be done.

The first being both transfer cases having the fluid changed, as well as the transfer case. The second being all of the spark plugs being changed.

The first I could see if I did any off-roading, but the second less so. I've changed spark plugs that have over 100k miles on them and still look new, however the dealership says all 24 need to be replaced. I can't imagine a v8 having 24 plugs, less so having them replaced after only 30k miles.

I've done some searching, I haven't really found much on if any of this should or shouldn't be done this soon. I'm the 5-6k miles on oil change type, so I'm wondering if this is in the same boat.

Thanks!
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Old 01-14-2011, 08:44 PM
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ok first there are only 16 spark plugs, yes they should be changed every 30k they are just cheap copper pluses, and plus they go into aluminum. You dont have to put ngks in, just plain ole champion copper plus 2.50 a plug. Diff fluids you mean? Thats easy transfer case easy. Do it all yourself save some dough. Transfer case pull the drain plug let it drain, pull front and rear diff covers, drian reinstall and refill. Or use a vacuum sucker and suck out fluid through the fill hole then refill. Plugs are easy take one out. Gap the new one brush on some anti seize and reinstall. Using a combo of extensions will get you into tight spots. Plugs took me 2 hrs the first time and i ve been working on cars all my life ( im only 23 tho lol) you can do all this your self and spend may 200 in parts. If you need more ask me im here. i would change them at close to scheduled intervals. do you tow? or haul alot that would be the deciding factor. if not you can let it roll for a bit maybe 40k but i wouldnt let it go any further.

Last edited by 04Hemi1500; 01-14-2011 at 08:49 PM.
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Old 01-14-2011, 09:58 PM
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I think you should bend over and get all 24 replaced.
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Old 01-14-2011, 10:14 PM
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ya i was gonna say the same but i was trying to be nice
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Old 01-14-2011, 11:07 PM
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To be honest with ya, spark plugs arent like they used to be, they're designed to run 50-100k miles trouble free. And seeing that the Hemi's have two per cylinder, id say it should last even longer. just my .02 ... Also, check the diff / tc fluids... If they dont look dirty ... let it go another 10k miles and check again. "If it aint broke dont fix it" ... but then again, Maintenance is the key to not breaking ****.
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Old 01-15-2011, 03:29 AM
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Most stuff is fairly simple, download your year FSM/Partsman and you should be ok. There is also a maintenance schedule with your owners manual (if you have it).
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Old 01-17-2011, 11:49 AM
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With an 08 you cant be far behind on anything and being you are right at 30k, I would start doing a little here and a little there but staying on top of it all.
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Old 01-17-2011, 05:09 PM
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Quote:
Originally Posted by SeanW727 View Post
To be honest with ya, spark plugs arent like they used to be, they're designed to run 50-100k miles trouble free. .
These use copper plugs. If they were platinum, then yeah 75 to 100K.
Coppers produce a better, hotter spark, but do not last as long as platinums, so yes, every 30K is about right. Mine were worn some @ 30K. Since I have a lifetime warranty on my drivetrain, I will follow the owners manual on maintenance schedules so they can't void the warranty.
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Old 01-17-2011, 05:44 PM
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Just changed my original Champion Spark plugs out the other day 90,000 km. They looked worn but not too bad, measured the gap and it was 0.53. Put the NGK's in gapped @ 0.43 and on the highway today I got 12.2 L per 100 km.
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Old 01-17-2011, 05:44 PM
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isnt it a lil early to be flushing the transfer case and the differential?? my manual says every 100k (about) unless the vehicle is being used severe
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