Thread: Spark Plug
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#7: 04-01-2006, 09:42 PM
 
 mccorry
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Title: Mr. NiceGuy
Location: Grove City, Ohio
Car: 2005 LGT 5MT Stg. 2.5 / 69 Camaro RS/SS
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^^^^^

Just to verify... the i's use Platinum... the GT's use Iridium.

Spark plugs will not make more (significant) HP
Replacing severly worn spark plugs can increase milage.