Getting ready to replace my plugs in 2006 Azera and shopping around
I see iridium plugs from $4 to $16 with Denso long life the most expensive.
What plug is the closest to the factory plug (trying to stay away from the dealer)? Gap them to .39-.43?? When replacing the plugs, I am also replacing the intake manifold gasket and PCV valve ... anything else?
I am the original owner with 180,000 miles (they where good plugs)!!
Mike

 

probably best off staying with what the manufacturer says to use.... look at the mileage ya got with the ones in it now.....