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2015 Ford Focus ST
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People have mixed opinions on this. Your climate/ temp lows is a factor.

Personally, I slap one step colder in everything, lol. I have yet to see any proven issues with doing so.
Maybe I'll look into these Ruthenium plugs. wouldnt hurt only having 70k kilometers on the thing to just put some new ones in and get the KAM reset, one less thing to worry about.
 

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Maybe I'll look into these Ruthenium plugs. wouldnt hurt only having 70k kilometers on the thing to just put some new ones in and get the KAM reset, one less thing to worry about.
I just checked my rutheniums last weekend after 10-12k miles (I forget exactly) and the gaps hadn't budged. Another vote for that as a solid plug.
 

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2016 Focus ST2
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@W4R mentioned the NGK Ruthenium HX Spark Plug LTR7BHX plugs, are these the ones you have?
It was out of stock and on back order
I got these instead
NGK Iridium IX Spark Plug LTR7IX-11 SET of 4
 

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$8.18 at Rock Auto...only 8 available.
 

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2016 Focus ST2
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I was getting other parts from a vendor so I went with what they had.
 

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$8.18 at Rock Auto...only 8 available.
Rock Auto is now OOS. Deal is ded. Now back to the beginning of the thread to find alternates.
 

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2016 Oxford White
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I picked up a set of 95605's from my local Napa. I'd check them out and see if yours has any. None of the otherocal part stores seemed to carry them.

Only paid about $10 each, so not a bad deal, either. I think auto zone wanted $14 or $15.
 

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I picked up a set of 95605's from my local Napa. I'd check them out and see if yours has any. None of the otherocal part stores seemed to carry them.

Only paid about $10 each, so not a bad deal, either. I think auto zone wanted $14 or $15.
Thanks. This is a good excuse for a Family Trip to the new O’Reilley’s that opened up in town.
 

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Rock Auto is now OOS. Deal is ded. Now back to the beginning of the thread to find alternates.
Well, guess I’m partly to blame. Got an in stock notification from Rock Auto before reading this and ordered a set about 10:00 EST. There were 8 available at that time.
 

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Ended up getting the 95605’s from Napa for $45 out the door. Gapped at .028”. Stock tune. 2018, 24,600mi. Replaced the stock plugs.
 

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2016 Oxford White
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My 95605's came out of the box gapped right at 0.029", I think one was closer to 0.030". Checked them all and installed them with no corrections.
 

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The "7" is the one step colder heat range, so if you are tuned, the "6's" may be too hot of a plug
 
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