You have the coils covered under a tsb from ford up to 100K miles.
replace the gasket and keep those same coils and plugs untill you detect a misfire and have them stress test. Then you will get them replaced for free.
and go ahead and order a set of visteons and ngk plugs to keep as spares.
replace the gasket and keep those same coils and plugs untill you detect a misfire and have them stress test. Then you will get them replaced for free.
and go ahead and order a set of visteons and ngk plugs to keep as spares.