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  • What fluid for an AX-5 Transmission?

    Originally posted by Joker®
    The 5 speed tranny uses brass synchros and the Owner's Manual says to use GL-5 gear lube. GL-5 has a sulfur base and will eat the brass I believe that is the reason the AX-5 & AX-15 trannys have a bad rep for failure
    I just bought a 2000 TJ w/ 4 banger and 5 spd... I haven't done any research on this yet, but would you happen to know if my Jeep has the same brass synchros? If so, what would you experienced Jeep Peeps recommend as a lube?


  • #2
    I use 80-90w gear oil in mine, along with some Lucas oil additive. Works great!


    • #3
      TJeep, I've heard that DC fixed the problems with the brass synchros, but I won't swear to it. There are better products on the market and you won't need to worry about it either way.

      I used Redline MT90 when I had an AX-5. It's about 8 bucks a quart (you'll need 3.3 quarts). Other Jeepers I know swear by GM Sychromesh. Both are synthetic and work great cold weather.