Transmission oil???

Discussion in 'General Harley Davidson Topic' started by mqhybrid, Jun 15, 2009.

  1. mqhybrid

    mqhybrid Active Member

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    Which oil would you use 20W50 or 75W140 in a six speed transmission touring?
     
  2. glider

    glider Veteran Member

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    75/140 spectro
     
  3. maine-e-axe

    maine-e-axe Junior Member

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    Depends on where you live, if it's in the north you might want 75/90:small3d015:
     
  4. TQuentin1

    TQuentin1 Well-Known Member Staff Member Moderator

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    Many of us here have tried and are very impressed with the Spectro 6-spd gear lube in these trannies. See here:

    Spectro Oils of America - Transmission Gear Oils

    If you can't find it locally, see their website for ordering online.

    TQ
     
  5. MASA

    MASA Member

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    Mobile 1 75w-140, just did it this past saturday. i can tell the difference. trany has a smother shift. won't go back to 20w-50
     
  6. glider

    glider Veteran Member

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    I used the Mobil 75/90 until I went to the spectro and I saw the same difference between these two as I did going to the mobil gear oil.
     
  7. 00BUCKSHOT

    00BUCKSHOT Junior Member

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    i use mobil 1 75w 140 because my engine got about 2mpg better with mobil1 in it so i figured hey these guys make good stuff and i put it in the tranny
     
  8. mqhybrid

    mqhybrid Active Member

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    Thanks. But being in canada spectro is hard to come buy. But royal purple is easer to come buy but its $$$ 25.00 a bottle. And dare i say it amsoil in can get much cheaper.
     
  9. 00BUCKSHOT

    00BUCKSHOT Junior Member

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    AMSoil is pretty good stuff
    i just don't like the way they market there product
     
    Last edited by a moderator: Jun 16, 2009
  10. doj1975

    doj1975 Active Member

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    I am running Amsoil Severe Gear 75W-110 in my 09 Street Glide and I am very satisfied. I went to there web site and signed up for the prefered customer plan. I save a little money on the oil and it's convenient to be able to order the oil and come home in a couple days with it waiting on my door steps.