spectro vs MOBIL 1

Discussion in 'Transmission' started by 00BUCKSHOT, Apr 20, 2009.

  1. 00BUCKSHOT

    00BUCKSHOT Junior Member

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    know everybody says mobil1 is great unlless you have a 6speed then you need spectro
    why in the world would 5 or 6 speed make any difference
    this baffels my mind could anybody explain what the advantage of spectro in a 6 speed
    now i'm not saying spectro is not good gear oil
    just wanna know whats the deal with spectro and 6 speeds
    ohhhh can you run it in 5speeds?
     
  2. Bud White

    Bud White Well-Known Member Retired Moderators

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    Spectro has a additive package designed for 6 speed
     
  3. glider

    glider Veteran Member

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    This thread can answer pretty much any questions you may have...

    Oil Suggestions For Harleys - Harley Davidson Community
     
  4. 00BUCKSHOT

    00BUCKSHOT Junior Member

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    yea i've herd that bud but my thing is gears are gears does the 6speed temps get higher than the 5 and need alittle extra ?
     
  5. glider

    glider Veteran Member

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  6. bwalsh22

    bwalsh22 Junior Member

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    Can't say I know the details, but I listened to the advice here and once I switched to Spectro, I was a believer. No longer is it hard to shift into neutral and no longer does the bike stick in Neutral when shifting to 2nd, a problem I had on occassion before. One change is all you need.
     
  7. 00BUCKSHOT

    00BUCKSHOT Junior Member

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    well i used regular old rev-tech gear oil since i bought my bike new
    and the last oil change i switched to MOBIL 1 gear oil
    now my tranny never got hung or mad noise with the rev-tech
    only thing i noticed was smoother shifting when i put the MOBIL 1 in
    my tranny is a 5speed
     
  8. glider

    glider Veteran Member

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    Try the spectro GL1 which is for 5 speeds and get that engine oil out of the trans.:s

    You'll see a world of difference.
     
  9. Dan89FLSTC

    Dan89FLSTC Banned

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    I have used Harley Primary oil, Spectro, Bel Ray and now I just use cheap 85w90 Gear Oil, never noticed any difference. Just pulled gearset out and it looks fine at 115,000 miles.
     
  10. Wolff

    Wolff Member

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    Six speeds have straight gears in 1&5 and 2,3,4&6 have helical.