i picked up ngk Iridium plugs for 2003 volvo s40. they say not to gap but its at 33 and book calls for 28 on double platinuims.

Asked by draake Mar 03, 2012 at 04:45 PM about the 2003 Volvo S40

Question type: Maintenance & Repair

can i use them as is or take them back? Do iridium help gas mileage, @$4.30 a gal. it would be worth it
to raise mileage.

Catherine answered 12 years ago

always gap, will not save on milage -especially if you do not gap, but overall power, pickup and starting will be improved so yes you will save gas. Nice plugs

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i picked up ngk Iridium plugs for 2003 volvo s40. they say not to gap but its at 33 and book calls for 28 on double platinuims.

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i picked up ngk Iridium plugs for 2003 volvo s40. they say not to gap but its at 33 and book calls for 28 on double platinuims.

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