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Whats the best plug and when do you need to change them. The guy at Oriely said the platinum 4 are the best, but atozone says stay with autolite and all say 100,000 miles. Anybody have any sugestions!
I'd stay with the Motorcraft myself. Others in this forum have had great luck with them, and not many have had problems with them from the factory. Except for the "flying spark plug" issue, but I think that is more of problem with the older designed heads, not the plugs.
Originally posted by DRM Are Motorcraft dealer only, or local auto parts store available?
Local.
I would change them every 70K - if for nothing else to replace the di-electric grease, clean the boots, blowout the plug cavity and assure the proper torque on the plugs.
I totally agree with the 70,000 mile change, whether they need it or not, for the above mentioned reasons. I am not however a big fan of the Motorcraft plugs. I changed mine two months ago and went with the Autolite Double Platinums. Each to his own though!!
I've seen a v-10 go 135,xxx miles on the orginal set of plugs
=)
and yes......v-10's love motorcraft plugs
those plat4 boshe plugs are over priced junk
the only plug that is worth the money are Denso's Iridium plugs...but at 12 bucks a plug......that get expensive with a v-10.........=)
but they are worth it. You'd probably see a little increase in performance if you have a chip headers intake and exahust system with those plugs
and they last longer than 100,000 miles.....seen some reports of almost 200,000 miles on a set (not in a v-10......though)
Originally posted by length Whats the best plug and when do you need to change them. The guy at Oriely said the platinum 4 are the best, but atozone says stay with autolite and all say 100,000 miles. Anybody have any sugestions!
I don't know if the mod motors are like some of the other Ford motors but I went around and around and around with a spark plug problem with a Zetec. I put in Autolite dbl plats and I couldn't get it to run for more than a month. I found out that that particular engine takes a low resistance, fine wire spark plug, which only the Motorcraft is. So when the Autolite was new, and had no resistance, it would run fine, but once it became a little dirty it would start to miss, and it would drive me nuts, because the plugs looked fine. I finally talked to a smart Ford guy who explained the whole plug thing and I put it right. I don't know if the mod motors are like this or not, but I am going to replace my plugs with the Motorcrafts when it comes time, I'm not going to take any chances.
As far as I know, you will probably have to buy the Motorcraft plugs at a Ford dealership. I know that none of the parts stores around my area carry them. Dont know if it is something they can order or not, I've never asked.
Why not just find out what company actually makes Motorcraft and buy that brand. I think I read that it was Autolite. Therefore, in reality you are probably getting pretty much the same product.
Originally posted by airtractrdrivr As far as I know, you will probably have to buy the Motorcraft plugs at a Ford dealership. I know that none of the parts stores around my area carry them. Dont know if it is something they can order or not, I've never asked.
AutoZone has them in their computer - just none in stock.
Originally posted by DRM AutoZone has them in their computer - just none in stock.
Anyone care to suggest a "second best" plug?
I am pretty shure that motorcraft and autolite are the same people. I know when I changed plugs in my 95 f150 the old motorcraft and the new autolites looked exactly the same in every aspect.
You guys are correct, Autolite does manufacture Motorcraft brand plugs for Ford. Just like two other companies make Motorcraft Oil and Motorcraft filters, but I dont remember who right off hand. It just seems to me that my truck runs better with the Autolites I use, for some reason. May be just my seat of the pants telling me that!!