Thread: 420SEL Rough Idle
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  #4  
Old 07-18-2008, 06:53 PM
pmckechnie pmckechnie is offline
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Join Date: Jan 2003
Location: Matthews, NC
Posts: 1,356
I have. My 500SEL does not like platium plugs and I have a brand new set to prove it. I second the NGK BP5ES plugs. They are the best for the 116 and 117 engins.
Paul
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