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2009 Subaru Outback 2.5i 5sp Manual
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354 Posts
Discussion Starter · #1 ·
I bought new plugs and wires. NGK Wires, and NGK Irridium plugs. Before installing the irridium plugs i'm going to use some cheap $1 plugs to gauge if I'm still burning oil or not.

After that I am looking for suggestions on spark gap. I usually run premium, but what would you guys suggest for regular, and premium?

Thanks,
Dave
 

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Premium Member
(formerly) 03 H6 OBW , (presently) 06 WRX Sportwagon & 2021 Honda CR-V
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18,345 Posts
I bought new plugs and wires. NGK Wires, and NGK Irridium plugs. Before installing the irridium plugs i'm going to use some cheap $1 plugs to gauge if I'm still burning oil or not.

After that I am looking for suggestions on spark gap. I usually run premium, but what would you guys suggest for regular, and premium?

Thanks,
Dave

I'm pretty sure your plugs will come pre-gapped. But, if you DO intend to alter the gap - be aware it is EXTREMELY easy to destroy the tiny iridium tip on the electrode.
 

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'05 2.5i H4 4-Speed Auto w/Sportshift
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514 Posts
I agree, the two times I purchased those plugs, once at the dealer-parts dept and once at the automotive store, they both told me that the plugs are "pre-gapped."
 

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Car: 2008 Tribeca, 2010 LGT, Sold: 2005 XT Limited
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2,926 Posts
My plugs were pre-gapped but way off. I regapped to the number under the hood.
 

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Registered
2009 Subaru Outback 2.5i 5sp Manual
Joined
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354 Posts
Discussion Starter · #5 ·
I thought they might come pre-gapped, but I know with my motorcycle for instance I always gap them to a different specification based on other riders recommendations. Wasn't sure if that was common here or not.
 
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