Thread: Spark Plugs, 45k or 100K?
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      11-09-2012, 02:43 PM   #8
Tee-Dub
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Drives: 2008 135i
Join Date: May 2009
Location: Vancouver, WA

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45k is factory recommended for 135i. If you're tuned guys say you should do them every 25k. Non-turbo 100k is probably fine.
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