In my M117 560, I installed a set of Bosch Platinum 2's about 6,000 miles ago. It seems to do fine, but looking at other threads, some are saying that non-resistor plugs are the way to go. I believe that the platinums I installed are resistor, and do you think that the next time around the Bosch Platinum 4's are worth the money?
Thanks, and God Bless,
Dave.

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