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
carringb wrote:What do you use?
Either is fine. My understanding is Autolite is the MFG of that particular Motorcraft plug. My local dealer even stock the Autolites instead.
