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The mkiv Supra Owners Club

Iridium plugs last 3000 miles???


Duffman
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Considering going BPU and i'm aware you need colder grade spark plugs

 

Guy before me got Iridiums fitted at last service approx 4000 miles ago...was told that these only lasted 3000miles???

 

I thot they lasted alot longer than that...is this correct?

 

 

I think they are ment to last 3times that or more.

I changed my last one in my old car every 9k

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i have a uk manual and running 1.3 - 1.5 most days in use, i have NGK 7's coppers fitted and i have also done a trackday on these and no problems at all, i would rather change them every 5 thou anyways to make sure. the full set from my local car spares was about £10 so was happy with that.

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