Bosch +4 plugs?
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Junior User
Joined: Feb 2004
Posts: 65
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From: Long Island, NY
Bosch +4 plugs?
I have read various threads on Bosch plugs with opinons varying from the truck runs awful to never ran better. 
I am about to have the plugs replaced on my truck and was wondering, if it were your choice, would you choose Motorcarft OEM or Bosch platinum +4 plugs?
I am about to have the plugs replaced on my truck and was wondering, if it were your choice, would you choose Motorcarft OEM or Bosch platinum +4 plugs?
Last edited by chaznolan; Oct 8, 2004 at 06:52 PM. Reason: spelling
Senior User
Joined: May 2003
Posts: 329
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From: Wichita, Kansas
Stick with Motorcraft. I put in some NGK Iridium IX plugs and they work fine, but they set off my check engine light with a misfire code. They burn a little hot. I haven't taken them off and the light never came back on so all is well. I know the correct Motorcraft plugs will work just fine as they are supposed to last 100K and are platinum. O'Reilly's sells them for $3 a piece.
New User
Joined: Aug 2003
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I changed my plugs at 72,000 miles with autolite double platinum. the motorcraft had slight wear, all were gapping around .060. you must admit, no one complains about reinstalling motorcraft. i think they're a very good plug. they are a single platinum though, for the 5.4 that is. my reason to go with the double platinum was so that the gap wouldnt erode as quick, that was my thinking. its been 20,000 miles now and its runs smooth as silk, gas mileage good...13.5 around town and almost 17 on the freeway, and no problems whatsoever. i can only recommend either of these two plugs based on my experience.
Senior User
Joined: Sep 2003
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From: York, PA
Motorcraft, it is not worth the time to redo the problem of a missfire, install what the engineers designed to use with that engine, Motorcrafts are available in double platinium now. I don't know if the Dealer has them, but at the good Automtive stores that sell Motorcraft they should have them, at least ours does. .02 Broken Wire
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Senior User
Joined: Feb 2004
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From: Columbia, SC
Stick with the NEW part number single platinum Motorcrafts , ofcourse if you want to do it twice go ahead and use something else 
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Senior User
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From: Wichita, Kansas
Originally Posted by WillieWildcat
Stick with Motorcraft. I put in some NGK Iridium IX plugs and they work fine, but they set off my check engine light with a misfire code. They burn a little hot. I haven't taken them off and the light never came back on so all is well. I know the correct Motorcraft plugs will work just fine as they are supposed to last 100K and are platinum. O'Reilly's sells them for $3 a piece.
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