I still remember when I did my first tune-up on my Duratec after I had just bought the car. When it came to chaning to spark plugs, I was heart broken to what I saw it had in the engine some CHEPO BOSCH COPPER SPARK PLUGS. I thought to myself, what a cheap basta*rd the previous really was. I wanted nothing but the best for my tune up, so I installed the Autolite XP Xtreme plugs in my baby (gave me boost in trottle response), K&N intake, plus other quality parts, and poured in some Mobil 1 full synthic motor and tranny oil. I brought it back to life better than ever. It really bothers me to see some people treat their cars like crap, but unfortunately those people will still exist no matter what. Anyways, I hope you folks have years of enjoyment out of your high performance engines.