Spark plugs???

**Diehard** · 07-25-2006, 04:45 PM

Can somebody tell me the difference between the recommended Champion plugs #RC12MCC4 and the truck Champion plugs that the Advance Auto Parts store sold me besides that the price for the stock plugs are $1.49 ea. and the truck plugs are $2.98??? I had the guy look it up 2 times and they said the truck plugs ($2.98) were the correct ones, but the manual and the WJ Jeep site says RC12MCC4. And yes I know they probably just wanted to sell the ones that cost more.

But is there really any big difference? Thanks.

**FPKites** · 07-25-2006, 05:00 PM

Sounds like the difference is a buck and a half.

Pretty sure that most people like running either Truck Plugs or NGKs

**ArloGuthroJeep** · 07-25-2006, 05:33 PM

I run the truck plugs. They are probably a more durable plug is my guess

**Varkyl** · 07-25-2006, 05:42 PM

Quote:

Originally Posted by ArloGuthroJeep

I run the truck plugs. They are probably a more durable plug is my guess

uummmm, no. The only real difference (well besides price) is the color of the porcelain. Oh and the ad campaign behind each plug.

**ArloGuthroJeep** · 07-25-2006, 05:44 PM

So the color changes the color of the spark like stickers add HP then? - I was originally thinking it was a heavy duty application like light bulbs that go in ceiling fans for instance...

**Varkyl** · 07-25-2006, 05:50 PM

Yeah something like the sticker theory.
For the second part the only reason a light bulb can be made heavy duty is it has a filament that can be supported or made of a different material. And since a spark plug doesn't have a filament...........

What would make a difference would be the metal used to the electrode. As silver and gold conduct better than others they would be good to use. But the price and low melting point make it not such a good idea.

xxxflhrci · 07-25-2006, 05:53 PM

Quote:

Originally Posted by Varkyl

uummmm, no. The only real difference (well besides price) is the color of the porcelain. Oh and the ad campaign behind each plug.

Exactly.

I get tired of hearing guys talk about getting, needing or wanting Champion "truck" plugs because they need them for a Jeep, truck, or whatever because they are a better running plug. B.S. same plug, different box and part number.

**FPKites** · 07-25-2006, 05:59 PM

Thanks for clearing that up guys

**Diehard** · 07-25-2006, 07:09 PM

Ok, that's clear now........as mud!!!

But thanks for all the replies.

I'll try the truck plugs. This is the first time I'm changing them. 30,000 miles. See if they add any HP.......

**FPKites** · 07-25-2006, 07:14 PM

Only stickers and the Tornado do that

**Diehard** · 07-25-2006, 07:23 PM

I already have some stickers.

But I still get 19 mpg on the highway.

xxxflhrci · 07-25-2006, 07:42 PM

I just realized that you are putting the plugs in a GC. You want Station Wagon plugs, not Truck plugs.

**Diehard** · 07-25-2006, 08:49 PM

Your sooooo funny, but don't quit your day job!!

This GC is more than able to go offroad.

**FPKites** · 07-25-2006, 09:01 PM

Guess I had to lift my GC up onto that rock, huh?

My station wagon! OMFG!!

**Diehard** · 07-25-2006, 09:14 PM

Oh. Ok. So you know what I mean. Never called mine a station wagon. My gas tank skid is sitting in my garage waiting to be installed too!!!

Too bad we're not in the same state.

07-25-2006, 05:50 PM	#6
Varkyl No where near stock Join Date: Jan 2006 Location: Glendale, Az Posts: 1,924 Profile Gallery Classifieds My Jeeps	Yeah something like the sticker theory. For the second part the only reason a light bulb can be made heavy duty is it has a filament that can be supported or made of a different material. And since a spark plug doesn't have a filament........... What would make a difference would be the metal used to the electrode. As silver and gold conduct better than others they would be good to use. But the price and low melting point make it not such a good idea. __________________ Nathan One slightly modified '96 ZJ new sig coming soon

07-25-2006, 07:42 PM	#12
xxxflhrci Registered User Join Date: Jul 2003 Location: South Posts: 3,643 Profile Gallery Classifieds My Jeeps	I just realized that you are putting the plugs in a GC. You want Station Wagon plugs, not Truck plugs.