Chevy says plugs good for 97,500….NOT

[ammolab]

I pulled one plug on my Chevy SS LS3 @ 75,000 miles. Pictured next to a new one.
Looks like they are all coming out short of the recommended 97,500!

 

[slacktide_bitog]

What kind did you use to replace them with? Is the OE platinum or iridium?

 

[Imp4]

Are you suggesting that means a poor OEM recommendation on service interval or an issue with this particular vehicle or both?

 

[Silver]

Dang. What's your driving style?

 

[Malo83]

How did the SS run prior to pulling the plugs?

 

[Tman220]

Interesting. Hasn't been my experience with GM vehicles I've owned. I've pulled plugs on several at 100,000 looking like they could go another 100,000. Also, I do believe the higher end AC Delcos are produced by NGK.

Pull a couple more, could be a defective plug, if the iridium falls off the either the ground strap or electrode the remaining metal will wear very quickly.

 

[BISCUT]

Subaru says 60k plug life for my 17 3.6. I am at 100k and will be doing plugs soon. Many with this engine have reported excellent plug condition even after 100k. I'll post up my results when I change em.

 

[FZ1]

7 years or 70,000 miles for me.

 

[jayjr1105]

OE Mazda 3 plugs with about 75K on them. I replaced them but seems they could have gone 100K easily.

 

[JohnnyG]

DArN GM! Way too much spark!

 

[14Accent]

That's not normal. I've replaced countless sets of plugs on many many different LS variants and NEVER seen a plug worn like that.

Just a few months ago I pulled a plug on my mother's old '07 Impala 3.5, and at 190ish thousand miles it looked excellent. New? Of course not. Serviceable? Absolutely. I reinstalled and let it ride. It's still running the OE wires as well. Until it starts misfiring or showing signs of other issues, they're staying where they are.

 

[Snagglefoot]

Can you show us the plug model number and also turn the plug so can see whats’s left of the plug end?

 

[ammolab]

Are you suggesting that means a poor OEM recommendation on service interval or an issue with this particular vehicle or both?

Yes, recommended for 97,500 so poor recommendation…issue with the OEM plug Possibly

 

[ammolab]

How did the SS run prior to pulling the plugs?

Ran fine. No misfire codes, no MPG loss. Son has the same car and his looked the same @ 95,000 miles. His car ran normal too.

 

[ammolab]

Can you show us the plug model number and also turn the plug so can see whats’s left of the plug end?

AC Delco 41-110

 

[Imp4]

Are you suggesting that means a poor OEM recommendation on service interval or an issue with this particular vehicle or both?

Yes, recommended for 97,500 so poor recommendation…issue with the OEM plug Possibly

That sounds like a solid "I'm not really sure".

 

[Snagglefoot]

AC Delco 41-110

Well, only one thing missing here. Just to be sure, could you show us a pic of the 41-110 printed on the plug? Maybe we can tell if it was counterfeit. Are you the original owner?

 

[ammolab]

Well, only one thing missing here. Just to be sure, could you show us a pic of the 41-110 printed on the plug? Maybe we can tell if it was counterfeit. Are you the original owner?

I bought the car new. 12 miles on the clock from Myron at Classic Chevrolet. My Son bought the same car new…his plugs looked the same @ 95,000. That is why I checked & changed mine.

 

[ammolab]

That sounds like a solid "I'm not really sure".

Well they are “supposed“ to go 97,500 but didn’t.
How do you think I know who-what-where-when?
Just telling the tale…

 

[Snagglefoot]

I bought the car new. 12 miles on the clock from Myron at Classic Chevrolet. My Son bought the same car new…his plugs looked the same @ 95,000. That is why I checked & changed mine.

Does it say 12621258 or 41-110? One more pic showing that might help. Here is a shot from the owners manual.