Mobil1 should quiet them down some, but zetecs have notoriously loud lifters. I have heard almost new foci that have lifters louder than my 110k+ mile engine.
98.5 SVT
91 Escort GT (almost sold)
96 ATX Zetec (i brake to watch you swerve)
FS: SVT rear sway bar
WTB: Very cheap beater
CEG Dragon Run - October 13-15