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rjacob · 07-24-2008, 05:47 PM

I have read on the net that iridium spark plugs can improve FE. Replacing worn spark plugs of any kind can improve FE. But will iridium spark plugs give better FE than platinum plugs? By how much? I think a set of 4 platinum plugs runs about $10. I think a set of the iridiums will run $30-$40. Are they worth the extra money?

07-24-2008, 05:47 PM	#1 (permalink)
rjacob EcoModding Apprentice Join Date: Jun 2008 Location: Rochester, NY Posts: 152 2017 Honda Civic LX - '17 Honda Civic LX 90 day: 39.92 mpg (US) Thanks: 2 Thanked 38 Times in 4 Posts	NGK Platinum vs NGK Iridium? Worth it? I have read on the net that iridium spark plugs can improve FE. Replacing worn spark plugs of any kind can improve FE. But will iridium spark plugs give better FE than platinum plugs? By how much? I think a set of 4 platinum plugs runs about $10. I think a set of the iridiums will run $30-$40. Are they worth the extra money? __________________ GreenCarMPG.com