Ford V-10 sparkplugs (SP 479 or AP 103)
I bought a old X with the 6.8 and wondered what's the best sparkplug to run. I seen Motorcraft SP 479 and Autolite AP 103. Any suggestions? I won't change them, I'll let the mechanic I use change t...
Forum Discussion
dodge guy wrote:My understanding is the Autolite is a double platinum plug and the Motorcraft is a platinum plug. The Autolite is more expensive then the Motorcraft. Will replace my coils as well. Since I don't know if plugs have been changed I'll let my mechanic do it. Usually I do most my own maintenance.
I used the Autolites when I did my plugs at 50k miles. I now have 94k and am going on a 2 week 3500 mile trip. I'll probably go with Motorcraft plugs this time around. I'm also doing all new boots too.
