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post #1 of 7 (permalink) Old 10-09-2009, 05:34 PM Thread Starter
 
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F250 5.4L V8 - Spark Plug question

Hey Everyone

What would you suggest are the BEST spark plugs for a F250 with a 5.4V8 in it?

it only has 207000km on it as it hasn't been used much for the last 2 years, but now that I've taken it over I suspect to be putting 75,000 to 95,000 per year on it. maybe 10,000 of that pulling a trailer.

It wasn't taken care of very well, so I am doing a seafoam treatment on it, then going to get new plugs, and put the Lucas Oil treatment in it (http://www.lucasoil.ca/products/index.asp)

My Company has moved to buying GM so I need to make sure this F250 lasts me as long as I can get out of it.


My former 150 ran like a beauty with the iridium plugs in it,
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post #2 of 7 (permalink) Old 10-09-2009, 06:59 PM
 
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I think 05 was the change over to the 3V design? If so plugs might be limited to Motorcraft, Brisk and champion...Not sure.

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post #3 of 7 (permalink) Old 10-12-2009, 02:12 AM
 
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My 04 had a 3v 5.4, anyways... I thought we could only run motorcraft in them?
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post #4 of 7 (permalink) Old 10-12-2009, 02:27 AM
 
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Quote:
Originally Posted by bor5.4x4 View Post
My 04 had a 3v 5.4, anyways... I thought we could only run motorcraft in them?
He has a f250. I think 05 was the first year for the 3V in those.

2013 f150 Ecobeast
3.55 E locker
FX4 Screw
SSI tuned!!!!!!!!!!!!!!!!!
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post #5 of 7 (permalink) Old 10-13-2009, 05:04 AM
zip
 
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Motorcraft plugs would be the wise choice. They seem to run best with the OE plugs.

Chris

03 F350 Crew Cab 4x4 S/B Lariat,Procomp 2" leveling kit, zoodad mod, straight pipe
75 F150, 79 Bronco
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post #6 of 7 (permalink) Old 10-13-2009, 11:35 PM
 
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05 should be a 3v 5.4l,i would suggest using motorcraft plugs in it,and make sure to use some anti seize on the threads and the lower portion of plug.


a moments silence for the shelbyx,i hope her new owner enjoys as much.
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post #7 of 7 (permalink) Old 10-14-2009, 12:49 AM
zip
 
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One more thing to remember.

Make certain they are torqued correctly.

Chris

03 F350 Crew Cab 4x4 S/B Lariat,Procomp 2" leveling kit, zoodad mod, straight pipe
75 F150, 79 Bronco
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