spark plugs
#2
01-09-2014, 09:15 AM
Join Date: Sep 2008
Location: Southeast PA
Posts: 25,136
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.
Iridium should last longer than copper. Copper helps keep the KR down, but needs to be replaced almost yearly.
#3
01-09-2014, 11:47 AM
Join Date: Apr 2010
Location: Mentor, Ohio
Posts: 12,153
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!
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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