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FJR Motorcycle Forums
Technical & Mechanical Problems
Dual Platinum Spark Plugs
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<blockquote data-quote="900gc" data-source="post: 1149624" data-attributes="member: 28365"><p>The real question then becomes one of longevity and cost. Would you get 164,000 miles out of standard plugs?</p><p></p><p>I changed my '07 Honda pilot Iridiums out @100k following the manual service interval. They still looked close to new and the car still ran fine. The new ones did not change how well the car ran nor was there any change in fuel economy.</p><p></p><p>On the other hand: My '98 BMW E38 (740il) had Bosch Platinums (essentially standard plugs) I had run for about 70k. The car started running poorly so I took it to a highly respected independent German car shop, they hooked it up to their super computer and pulled the plugs after getting codes about sparking issues. The plugs were very much toast, so physically degraded that I was shocked the car ran at all.</p><p></p><p>2 different cars cars I know but in one the Bosch plugs were destroyed while the Iridiums were fine in the other. The main advantage I see to running Iridiums is to benefit from extended plug change intervals without degraded plug performance.</p></blockquote><p></p>
[QUOTE="900gc, post: 1149624, member: 28365"] The real question then becomes one of longevity and cost. Would you get 164,000 miles out of standard plugs? I changed my '07 Honda pilot Iridiums out @100k following the manual service interval. They still looked close to new and the car still ran fine. The new ones did not change how well the car ran nor was there any change in fuel economy. On the other hand: My '98 BMW E38 (740il) had Bosch Platinums (essentially standard plugs) I had run for about 70k. The car started running poorly so I took it to a highly respected independent German car shop, they hooked it up to their super computer and pulled the plugs after getting codes about sparking issues. The plugs were very much toast, so physically degraded that I was shocked the car ran at all. 2 different cars cars I know but in one the Bosch plugs were destroyed while the Iridiums were fine in the other. The main advantage I see to running Iridiums is to benefit from extended plug change intervals without degraded plug performance. [/QUOTE]
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FJR Motorcycle Forums
Technical & Mechanical Problems
Dual Platinum Spark Plugs
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