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spark plugs

   
Old Jan 9, 2014 | 09:10 AM
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dgm
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Default spark plugs
Any advantages of autolite iridium over the one step colder copper 606?
 
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Old Jan 9, 2014 | 09:15 AM
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If you don't need colder plugs, no need to spend the time on them.

Iridium should last longer than copper. Copper helps keep the KR down, but needs to be replaced almost yearly.
 
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Old Jan 9, 2014 | 11:47 AM
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My old '94 Grand Am (3100 powered) ran copper plugs, they would last about 50K miles.

But I agree with Chibi, no need to get copper. Stick with platinum or irridium. I've been using NGK platinum plugs lately and they work GREAT!
 
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