Brad Penn breakin oil.Black moly paste on teh lobes/lifter bottoms (only). Do follow all the std preps ahead of time including making sure the lifters have enough clearance to rotate properly. On mockup, lifter body/bores cleaned & lightly oiled w WD40, lift each lifter off of it's lobe w your finger & let it go & it must fall back onto the lobe w a resounding "thunk" from it's own weight & if not you are too tight. For the ring breakin part read "breakin secrets" at www.mototuneusa.com (5 minute read)