I had a 727 that sat 9 years after a rebuild, an Old School Mopar Bro of mine said the fluid soaks in and ruins stuff. For 300 bucks, I had a local bowtie guy that owns a transmission shop redo it. Or at least he said he did... unlike United Speed World, who Robbed on My Heads! I guess they thought I wouldn't take them back apart when I got em home they only did halfway whatever they did because it still had motherfuking Carbon on half the valves. Supposedly Magnafluxed, valve job. They were off a running motor I don't think they did a damn thing to em