Thread: DIY N55 Spark Plug Change
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      02-15-2016, 10:52 AM   #11
Polo08816
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Drives: 2014 335i M Sport
Join Date: Sep 2010
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Quote:
Originally Posted by Orion4 View Post
Your plugs actually look pretty good given the mileage.
I always use Top Tier gas, oil changes every 5,000-7,500 miles, and the powertrain is complete stock (no tunes).
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