Change em now!, Get the Lisle tool, and have it handy. I had 59000 on my 06, Broke 5, was able to get the tool on July 3, called Oreilly autoparts 7:15 am, had it by noon. toughest one was driver side rear, no room to turn the wrench, add to use an air rachet to start the tap to remove. Lisle is a lifesaver!
Does Marvel's Mystery oil really work? I' m @ 50K on my 04 s/crew 5.4 and starting to get nervous
It works!! I had 34k on my '06 and decided to change them. I run it intermittently in my gas and put some in my last oil change and the plugs had hardly any carbon on them and all of them came right out.
Do not hesitate to use it!!
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2006 F150 Screw XLT 5.4 4x4
Volant CAI w/ Powercore
Hella Optilux Fog Lamps
Extang Tonneau Cover
Magnaflow SIDO 16614
Edge Evolution
I generally put in 16 oz. in a full tank every fourth or fifth tank. You can also take out one quart of oil and replace it with one quart of Marvel Mystery Oil.
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2006 F150 Screw XLT 5.4 4x4
Volant CAI w/ Powercore
Hella Optilux Fog Lamps
Extang Tonneau Cover
Magnaflow SIDO 16614
Edge Evolution
I think the champion plugs work at least as well as the motorcraft plug....i've seen no difference in performance....and its been close to 25000 miles....
You do know the brisk plugs are colder plugs right???
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2007 Lariat screw - White Sand Tri Coat - chrome package - Black leather captains chairs - sunroof - audiophile - 20" Mark LT wheels - Color Matched Door handles -
2005 XLT scab -
1995 xlt scab - 13 inches of lift - SAS
Needed: 2004-2008 OEM cat back for F-150 supercrew
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