E46Fanatics - View Single Post - M3 Spark Plug Life?
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Old 12-07-2012, 09:54 AM   #8
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Join Date: Feb 2012
Location: Jacksonville, FL
Posts: 141
My Ride: 2004 M3 Convertible
I did mine at about 62k, shortly after I purchased the car, as I didn't know if it had ever been done. It's easy to do in an hour, and the plugs while a bit pricy for plugs.....won't break the bank. Mine looked pretty good when I took them out, but feel better knowing there are 6 fresh ones in there. I took the opportunity to clean the parts of the engine that I exposed during the work, so not only did I get new plugs which I can't see, my engine bay looked a lot nicer.
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