After having my newly rebuilt 2004r Stage One tranny properly adjusted which was a story all by itself I still felt that it downshifted a little hard every once in a while. The rebuilder stated he would rip the unit down if necessary to address what he believed to be a sticky valve. Before doing that he suggested I try the Lube Guard and that it would not void my warranty as the one I was to use was not the sealer version. I know nothing as to how this stuff does what it does but not only did the shifting issue go away (at least for now) but my shifts overall were better up and down. All the searches on the product that I did were all positive and it was THE ONLY additive recommended by rebuilders that I was. After initially going from a turbo 350 tranny with 3.08 gears to the 2004r with 3.73 gears I was disappointed. Now that things are working as they should I'm very happy with my swap as it has woken my car up!
