This morning I replaced my original plugs and would you believe that they were still within the gap spec of 1-1.1mm. Those plats are pretty tough.

I replaced the plugs with the NGK copper plugs. They're very easily replaced on the 4cyl engine, so I don't mind doing it more frequently(30K). The plats cost $12 each and the coppers only $8 per set of 4, so I went cheap this time.

Hopefully I can keep the miles under 30K/year:-)

according2me,

Did you have any trouble breaking the plugs loose? I've heard horror stories about plugs left in up to the 100k mile mark. Some recommend to pull the plugs every 30k to make replacement at 100k easier.

No trouble at all. I did it first thing in the morning while the engine was cold and they broke free easily. I had never removed them until this replacement.

Copper plugs usually spark hotter than plats and I'm going on a road trip tomorrow, so I'll be able to tell if my MPG increases. It will be hard to top the mpg from my last trip though.

Hey according2me,

Glad to see an LSU or LUS fan as Justin Wilson calls them......bless his soul.

I was always under the impression that plats where a hotter firing than copper. If you wanted a hotter firing plug you had to specify it when you bought a replacement. Where did you hear that copper was hotter.?

I've always heard that copper is a better electrical conductor than platinum and gives a stronger spark, but platinum is a stronger material and gives much longer life. Also, because of platinum's harder nature, the electrodes can be reduced in size to help with combustion.


Hopefully, next up for LSU is another baseball crown. Geaux Tigers!!!:)