Spark plugs

Asked by JeremiahL19 Feb 17, 2016 at 11:46 AM about the 2004 Pontiac Grand Prix

Question type: Maintenance & Repair

What spark plugs are best , platinum,iridium, or
copper

3 Answers
190

twinkiedooter answered 8 years ago

Sometimes cars don't like the platinum plugs. How old is the car and what model? If it has a larger engine say like in a Jeep 6 or 8 cylinder then use the platinum. Smaller older cars do better with copper plugs. Have owned both so I just go with the engine size and the age. Just my 2 cents.

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F_O_R answered 8 years ago

Double platinum plugs can last a 100k miles but not the single platinum plugs.

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10

GuruTH9Z4 answered 5 years ago

My 08 Go will only run irudium plugs any other plug platinum or whatever burns them up 2 days time

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