Thread: How often do you change spark plugs?
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Old 09-20-2013, 10:00 AM   #2
SlingShot


 
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Drives: 2012 ZL1 - #670
Join Date: Jun 2009
Location: Seminole, Fl.
Posts: 8,009
I haven't changed mine with 21K on it. Just pull one and see how it looks ..
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