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Hmmm, why not platimum?
I whent down to my local shop(reputable) and they sold me Bosch Platinum 4 spark plugs.
I have not put them on yet.
The only time I ever heard of not useing platinum plugs was in a heavly boosted engine. I also, thought they were platinum from the factory as cooper plugs will not last to 90,000 miles witch is when I understand they are to be changed.
Am I wrong??
Richard
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