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Sounds like you'll have to stop more with the one with double the P....or carry some empty bottles with you. okay..seriously.
AP designates the Platinum Spark Plug which has a platinum tip center electrode. APP designates the Double Platinum Spark Plug which has a platinum tip center electrode and side wire. From their website.
If you are putting these in the V10, don't. I made that mistake last year and pulled them a couple weeks later and replaced them with Motorcraft. $40 mistake.
I replaced all 10 plugs with Autolite Double Platinums and it ran so bad my wife commented on it. The Autolite's were my choice because of similar information gathered here and I like going to my local Ford dealer as much as going to the dentist. Pulled the Autolite's and replaced with 10 Motorcraft and it was like driving a new truck.
Are the regular platinum plug the same as the stock plug that came with my 2000 truck. The stock ones have served me fine for 62K so why should I change
This Hennessey Takes the Expedition Tremor's Off-Roading Capability to the Next Level
Slideshow: The VelociRaptor Expedition gains a lift, upgraded suspension, Brembo brakes, and trail-ready equipment while retaining the stock 440-horsepower EcoBoost V6.
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