I am looking for input on brand/type of spark plug(s) that everyone has either used or recommends for tune up. My 06 HHR is coming up on 90,000 miles and is starting to idle a little rough. What's a good plug to use? Autolite/Bosch/ACDelco? Iridium, Platinum, etc? Any input/advice is greatly appreciated.

 

I'll just say....

You went nearly 100,000 miles on the OEM Delco. What would be wrong with using those again?

Oh, I believe they ARE iridium, unless it's a very early '06 model, if you didn't know.

 

Stay with the Delco Ird. plugs.

 

Stay with the Delco plugs, others have strayed and paid the price with assorted issues.

 

Agree with my esteemed colleagues , why rock the boat ??

 

Thanks for the recommendations everyone.....I am going to stay with the ACDelco Iridium plugs. am ordering them off of rockauto.com, along with the cabin air filter and am switching the air filter to a K&N drop in.
I appreciate everyone's input and am really enjoying the HHR and having a site like this to reach out to for advice.

 

AC delco.... I tried Bosch Iridium & Autolite Iridium, what POS.

 

Bosch.... I don't care what anybody says, they're waaaaayyyy over rated!

I tried thme years ago in my Sunbird. I had AC Delco Rapid Fire plugs and tried the Bosch platinum plugs; threw them out in one day and installed the old AC Delco's; couldn't beat them! So much for the hype....Champions probably would've been better.

Stick with what works! AC Delco!