My 2004 Saturn Vue 3.5 L hits 100K miles last week. The owner manual calls for spark plugs replacement. I removed one in the front this morning. The OEM is Denso iridium with platinum ground pad and it looks perfect, the gap remains the original gap (040).
Shall I replace the spark plugs even I think the car will run an other 100K with this original set ???
Shall I replace the spark plugs even I think the car will run an other 100K with this original set ???