Just put 50 wt all around in there...feels the same as what came out.Could have been 50 wt, i noticed the old fluid was very dirty though. I also noticed when you would compress the shock with out a spring the rear shaft would just stay inside...when i changed the fluid, it actually started to go out slowly.So something is different now.I may actually run 60wt in the rear as this is what steve slayden was running and it seems it may work.