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Old 02-26-2013, 07:52 AM   #1
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1995 mustang 3.8

Hello ,

I'm gonna change my spark plugs soon.i pulled out 2 and I noticed they were platinum Bosch.My mechanic recommended that i stick to ford motor craft.is there any diffrence,or gains?
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Old 02-26-2013, 08:35 AM   #2
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Yes big difference. The bosch plugs are garbage in our motors. Definitely go with motorcraft or autolite. Platinum plugs are ok and will last a little longer than copper. Ford uses motorcraft platinum from the factory. I switched to the coppers and now will never run anything else in my mustang.
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Old 02-26-2013, 08:40 AM   #3
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Good to know.its time to switch out them old spark plugs anyways.i also have some duralast spark plug wires ima install at the same time.hopefully there's a diffrence.thanks
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Old 02-26-2013, 09:44 AM   #4
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basically 99.9% of the crap you see advertised for plugs is all BS. Go with a good reliable brand (OEM Ford for example).

You get nothing for upgrading to the super expensive ones. If you go with copper you just have to change more regularly. The most important thing here is to check their gap, thats mostly it. Dont believe the hype.... I am running Iridium as thats what came in mine and I can run a larger gap with my supercharger setup, but many run copper in mine 100% fine. I just dont like to change mine yearly. For yours with copper you should be fine for a LONG time.
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Old 02-26-2013, 10:05 AM   #5
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basically 99.9% of the crap you see advertised for plugs is all BS. Go with a good reliable brand (OEM Ford for example).

You get nothing for upgrading to the super expensive ones. If you go with copper you just have to change more regularly. The most important thing here is to check their gap, thats mostly it. Dont believe the hype.... I am running Iridium as thats what came in mine and I can run a larger gap with my supercharger setup, but many run copper in mine 100% fine. I just dont like to change mine yearly. For yours with copper you should be fine for a LONG time.
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Old 02-26-2013, 10:16 AM   #6
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also be sure not to tq them down to tight, you dont want to mess up the threads, also antiseeze should be used (dont go crazy with it)
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Old 02-26-2013, 11:46 AM   #7
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also be sure not to tq them down to tight, you dont want to mess up the threads, also antiseeze should be used (dont go crazy with it)
I do ^this. I also put dielectric grease on the spring thingy inside the COP boot that connects to the spark plug.

CRC Industries Di-Electric Grease

I put that on my battery terminals too.
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Old 02-26-2013, 11:48 AM   #8
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i run autolite coppers...$2.09 a plug and works perfectly in our cars. i wouldn't put bosch in my lawn mower (which is basically what i tell my customers lol)
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Old 02-26-2013, 12:51 PM   #9
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I run ngk iridium for a long time . No issue so far
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Old 02-26-2013, 02:28 PM   #10
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Yea i was wondering what the diffrent kinds if spark plugs and which to use.im not sure but I think I saw one that runs about $19 each!
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Old 02-26-2013, 03:49 PM   #11
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its about time for me to inspect mine.... always fun taking the tire off to check your spark plugs....
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Old 03-09-2013, 09:10 AM   #12
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its about time for me to inspect mine.... always fun taking the tire off to check your spark plugs....
Why do you have to take the tire off?!?!
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Old 03-09-2013, 10:40 PM   #13
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Why do you have to take the tire off?!?!
ever seen the engine bay of a 4v? lets just say it's not fun to work on
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Old 03-10-2013, 12:10 AM   #14
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ever seen the engine bay of a 4v? lets just say it's not fun to work on
Spark plugs are a breeze on the Mach 1. All you need to do is remove the cold air intake so you can get to the passenger side.
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Old 03-10-2013, 12:53 AM   #15
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lol i gotta do the same thing to do the plugs on my car....found i can swap all 6 in about 15 mins
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