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Dr. Flyview · 12-01-2011, 02:37 PM

^^ Those are copper. I've read they're best for performance but need to be replaced more often than platinum.

I use NGK BKR6E which is the single prong (BKR6EK is the double prong). I think either is fine.

12-01-2011, 02:37 PM	#3
Dr. Flyview Formerly Flav_cool Join Date: May 2006 Location: Toronto Posts: 4,354 Car: '98 328is + '94 325i	^^ Those are copper. I've read they're best for performance but need to be replaced more often than platinum. I use NGK BKR6E which is the single prong (BKR6EK is the double prong). I think either is fine. __________________ 1998 BMW 328is - summer 1994 BMW 325i - daily 1992 BMW 325i - totaled 1988 Mercedes Benz 190E 2.3-8V - sold