Two of my new coils have oil on them so I need to change the passenger VCG. Currently $23 on rockauto for the Felpro set. Hopefully permatex is decent enough for the sealant points? Have some left over but they have some pretty bad reviews.. Is it recommended to use the Motocraft metal prep to clean the surfaces or can I just use something like rubbing alcohol? My 04 leaked on me either because of the permatex or the surface wasnt clean enough.