Original poster: "by way of Terry Fritz <twftesla-at-qwest-dot-net>" <rblaisdell-at-juno-dot-com> Yes, we ran our rebuilt depotted tranny without anything but air. It humms pretty loud for a few seconds then it settles in and works fine. We DO plan on sureing it up with some spacers and submersing it in mineral oil. Peace, Ry