It's time for me to change my plugs. My car is a 2005 with the N*. How do I find out if my car has AC Delco plugs or Denso plugs without pulling one out? One dealer told me they are AC Delco and another told me they are Denso.
FWIW, Albert Champion was a French bicycle racer in the early 1900s that made spark plugs for a sideline. His investors dropped him and kept his name, Champion for the company. Albert joined forces with GM and became AC sparkplug.
What come standard in the 2005 N*? Is it the AC copper, platinum, or iridium? Because the dealer is giving my an option of all 3.
I need to do mine to because there is 120K miles on it and i dont think they have ever been changed.
That would be comparative to buying only three new tires and leaving one old one on the car. Sure you could do it but will when will you replace the remaining plugs at a later date? For practicality purposes, it makes a great deal of sense to change all of them at once. Personally, I wouldn't consider replacing only four plugs.