Re: 2005 GC- Mileage, Plugs

Anyone have spark plug  recommendation for a 99 GC 8 cyl?  How about the
gap 
setting?

"Steve Richards" <fixmypc01@[EMAIL PROTECTED]
> wrote in message 
news:3y51k.44$fc.34@[EMAIL PROTECTED]
> Alrighty, read lots of posts and I thank you all for the input. My buddy

> (Manager) at the local 'zone is a Mopar nut and sees it all...
>
> He stated that he read an article or TSB somewhere that stated Chrysler 
> did not recommend anything other than the OE plugs, citing their belief 
> was that the Bosch platinum (and variants) caused pre-ignition. So, I
went 
> OE, although no NGKs were available, so in went Autolites. Funny thing
is, 
> 'zone's system states gap at .044, underhood sticker says .040. Set them

> all at 40 and took her for a spin to Laughlin and back. 75 miles, 20
mile 
> 6% grade down into the valley and back up- 23.2!!!!! We have never
gotten 
> that result before.
>
> In brief, I'm stuck on the OE plugs, and just put Autolites in my 97
Ford 
> 460 motorhome chassis. Have yet to run a full tank through her...
>
> Thanks all for your valuable insight!!!!
>
> -- 
>
> 2008 Sonata SE- His
> 2005 Grand Cherokee-Hers
>
> AZ home for sale near Laughlin, Las Vegas, BHC:
>
> http://www.realtor.com/realestate/golden+valley-az-86413-1089865380
>
> "Steve" <no@[EMAIL PROTECTED]
> wrote in message 
> news:G_-dnb60OZ2z_9nVnZ2dnUVZ_vWdnZ2d@[EMAIL PROTECTED]
>> Steve Richards wrote:
>>> Just checking in, the missus has the 3.7L and the specs say plugs
every 
>>> 30k. She's really up in arms about the fuel prices. That's a topic for

>>> another day. Sure am glad I don't have a diesel!
>>>
>>> She's getting 17-19 (80% hiway). I pulled the plugs (50K) and they are

>>> the original NGKs. We're the second owners and I am really surprised 
>>> that they haven't been changed. Air filter is clean and we use
87octane.
>>>
>>> Anyway, I am planning on replacing the plugs tomorrow with Bosch 
>>> Platinum IIs. Pros/cons and your feedback would be appreciated.
>>
>> As far as I'm concerned, there are NO "pros" to Bosch platinum plugs.
The 
>> tiny center electrode is a perfect design... IF your goal is to 
>> completely negate the longer wear life of Platinum by forcing the arc
to 
>> strike in exactly the same place every single time. And if you want to 
>> make sure that the metal electrode erodes down so that its below the
face 
>> of the surrounding hard insulator, and therefore one little fleck of 
>> deposit can cause it to misfire.
>>
>> If you want platinum plugs, buy a set of Autolites. They're 100 times 
>> better than the Bosch crap.
>
>