Platinum vs Iridium Spark plugs
Posted: Sun Oct 09, 2016 6:15 am
I am redoing head gaskets timing belts and replacing the spark plugs on my 1998 subaru legacy outback 2.5l ej25 DOHC engine, and I am wondering what the best plugs to go with are I had run by and bought some NGK iridium spark plugs. But I got to thinking about it and started wondering if maybe I should of gone with the platinum ones instead? I pulled a plug out of my engine and It had autolite ap3924 platinum plugs in it, know I had run 100,000 miles on those plugs and they really are not in bad looking shape. Any suggestions