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I would stick with Autolite or NGK. Mechanics have reported on rare occasions the thin ceramic insulator on the Bosch plugs break off in the cylinder which is way bad.
Whoa so I guess I've just wasted $66. Put them in about a week ago and felt the difference in power, but after washing my engine it started to miss and I checked the plugs and found a few loose and then the engine ran fine. A day after it started again so Sat or Sun I will buy the $43 autolite and replace the bosh. Thanks!
just make sure you replace the plugs correctly..do a search and follow the correct procedures and you'll have less problems...also use motorcraft plugs
All Of My Other Cars And Motorcycles I Have Washed The Engine With No Problems...light Wash..... But After Rading About The Problems Some Have Had I Do Not Wash My Exc V10 Engine..and Boy Is It Duuuuurrrty!!!!
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