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Spark Plugs & More

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Old 04-03-2009 | 06:02 PM
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RYSSBAY's Avatar
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Spark Plugs & More

My 04 GT is creeping up on 100,000KM and I was wondering if I should change the plugs...

If So...

Should I stick with Ford Plugs or go with another brand?

Some say you should always stick with your factory brand plugs
And of course
Others swear by aftermarket plugs

Also, is there any other maintenace that should be done at 100,000?
Old 04-03-2009 | 06:34 PM
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wouldn't hurt to do your fuel filter and air filter if you don't have an aftermarket one. As for plugs, from what I hear stick with the Motorcraft factory plugs. I used champions when I did mine, and havent had any issues at all. Can't go wrong with factory though.

Last edited by 20gt00; 04-03-2009 at 06:41 PM.
Old 04-03-2009 | 06:52 PM
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Only use Ford Motorcraft,............. most other plugs,.... especially crappy tire are garbage.
Old 04-03-2009 | 06:54 PM
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OK so Motorcraft Plugs...Change the fuel filter...Air filter is fine as I have an intake
What about transmission work (fluid, filter?)
What about my coolant?
Old 04-03-2009 | 06:58 PM
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^^Is your car a standard or an Auto? If it;s an auto, wont hurt to change the tranny fluid, manual should be OK I would think. Diff fluid change wouldn't hurt either. Just did mine last year.
Old 04-03-2009 | 07:41 PM
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Stock plugs are good,you will get some longtivity out of them when sticking with them.Or if you want to go with copper plugs,AutoLite 764's are also recommened for our 4.6L for the best performance,but they will be needed to be changed more frequently.
Old 04-03-2009 | 08:18 PM
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I will change the fuel filter (ford), plugs (ford) and coolant (prestone)
I am going to leave the diff fluid till I get my new gears
When I change the coolant I guess I should flush it as well right?
With something like Prestone SUPER FLUSH as the coolant that is in the car might be original as I am the second owner and the car is 5 years old
Old 04-03-2009 | 08:41 PM
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Stay with Motorcrafts, these are great plugs...just make sure you gap them to your specs.
Old 04-03-2009 | 09:50 PM
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If you're running original plugs at 100,000km's I'd say change them. From my experience (I know its not a Mustang) but I had a 00' F150 4.2 V6 that had 120,000km's on it before the plugs were changed and what a difference new plugs made in fuel economy. I also did fuel and air filter and that also helped a lot so I'd recommend those as well.
Old 04-04-2009 | 12:50 PM
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Honestly, my '96 has 80 000k and i did my fluids and filters



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