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Discussion Starter #1
Guys, wondering what is the factory specified interval for spark plugs?
 

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Discussion Starter #2
While getting the trans servied today the advisor printed out a '08 W204 service schedule. Plugs are 91k.
 

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I just pulled out the bosch OEM plugs - still looked ok at 90k ... But I would
Not run them longer than this - change them once now and you should be good for another 90k (or 10!years) Bosch or ngk are listed as the replacement - I went with denso iridium long life - running fine as well.
 
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