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Spark plugs look white after 10k miles (archive)
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Posted by DH on October 19, 2000 at 18:27:17:

On my 323i, just replaced existing W9???? Bosch w/ W8RLDS plugs. I didn't ask for W8RLDS plugs, that's what BavAuto matched up for my 323i. I take it that the W8 is a colder heat range plug. Incidentally, plugs pulled out showed to be powdery white on 3/4 of the ceramic tip and light brown on remaining 1/4. Know what this means ?



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