adsm08 4,245 #1 Posted 16 hours ago I know I've seen this discussed before, but what is everyone using for fluid in these add-on hydraulic lift systems? I can find no information on what the original WH part number for the fluid actually was. I have been using type-F transmission fluid, and I cannot get the pump itself to stop leaking. I've been using the seal kits that Lowell sells, rebuilt multiple units and they all leak. It seems like every time I reseal one it leaks worse than before, and I have come to the conclusion that the rubber used for the seals and gaskets is not ATF resistant. This most recent one is leaking so bad it has gotten the main belt covered, so I basically only have 1st gear right now, everything else slips. Share this post Link to post Share on other sites
gwest_ca-(File Mod) 12,053 #2 Posted 15 hours ago Lower right corner from the Lubrication chart Share this post Link to post Share on other sites
WHX?? 55,618 #3 Posted 14 hours ago (edited) I think it was some kind of atf. I had one that I could never get to quit leaking but it was in pretty rough shape. Spool bore was really rough. Yah worse part it they leak right over the belt. Eventually replaced it with one off a 953 carcass & gave it to Lowell. He went through it and gave it back claiming it was leak free but I have yet to place it in service. He told me he uses Lucas hy fluid cause of the additives in it. Edited 14 hours ago by WHX?? Share this post Link to post Share on other sites
Achto 31,240 #4 Posted 6 hours ago This is what I have been running in mine for years. https://www.oreillyauto.com/detail/c/lucas-oil-products/lucas-conventional-hydraulic-fluid-30w-1-gallon/luc0/10017 1 Share this post Link to post Share on other sites
953 nut 64,575 #5 Posted 4 hours ago (edited) 11 hours ago, adsm08 said: I have been using type-F transmission fluid, I have also used type "F" ATF for the 953s without any problems. Edited 4 hours ago by 953 nut 1 Share this post Link to post Share on other sites
peter lena 9,796 #6 Posted 2 hours ago @adsm08 simple example of oil / lubrication creep , lower edge of rear car hatch , that was started at highest available access point ? that way its a top down creep , like a seamless action / movement related , car , shifting , bumps , curves , etc , have that in , every seamed component , zero rust , metal degradation , been doing this most of my life , my addiction to lubrication , was also enhanced in N/G , truck maint , winch rebuilding , experiment on a problem , simple easy . no rust , pete Share this post Link to post Share on other sites
