Oops yeah 606 or 605, long week. Personally I got the AL606's just because I couldn't find a lower heat range plug where I live. If you do go copper replace them every 15k these cars use waste spark system, eats these plugs up.
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Oops yeah 606 or 605, long week. Personally I got the AL606's just because I couldn't find a lower heat range plug where I live. If you do go copper replace them every 15k these cars use waste spark system, eats these plugs up.
Like 94GrandPrixSE said, it's about the waste-spark engine, not whether or not there's boost. Platinum gets brittle and breaks because it can't handle the abuse. Copper's soft enough not to break off in the engine, but doesn't last very long. Iridium does a great job.
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