My buddy has a 2004 Mazda6 2.3L and has never changed his spark plugs and he's quickly approaching 60k miles. Which spark plugs are recommended for his car?
I use NGK coppers on all my Proteges and they work great, but I change them out frequently (every year or two years at most).
Do the NGK Iridium or Platinum plugs improve performance or gas mileage on the naturally-aspirated 2.3L engine? Are they worth the additional expense? Do the Iridium or Platinums need to be re-gapped?
I use NGK coppers on all my Proteges and they work great, but I change them out frequently (every year or two years at most).
Do the NGK Iridium or Platinum plugs improve performance or gas mileage on the naturally-aspirated 2.3L engine? Are they worth the additional expense? Do the Iridium or Platinums need to be re-gapped?
