Primary/trans oil

Discussion in 'Sportster Models' started by 67hat34c, Jan 9, 2009.

  1. 67hat34c

    67hat34c Active Member

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    What primary/trans lube to you use and why:

    I changed to amsoil 20/50 at 1k miles. However have noted quite a bit of discussion about using HD fluid, Spectro etc.
     
  2. formike56

    formike56 Junior Member

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    I use amsoil in the motor. In the primary is spectro Primary. In the tranny is spectro six speed tran oil. Spectro is hard to come by on the road. I order it online so I have plenty on hand.
     
  3. glider

    glider Veteran Member

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    Have you looked here?

    Oil Related Tips - Harley Davidson Community
     
  4. JDiddy

    JDiddy Member

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    Spectro Primary Chain Case oil is the best application here. For the motor I use Spectro Heavy Duty Platinum 20w 50 full synthetic. Spectro Batch Blends all its oils and they have 1800ppm zddp. This is the anti ware additive that is expensive.
     
  5. NEWHD74FAN

    NEWHD74FAN Experienced Member Retired Moderators

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    I use Motul 3000 Synthetic Motorcycle V Twin Oil in the engine, and is stocked by a local metric dealer, as well as the Spectrol 85W Heavy Duty Gear Oil in the Primary/Clutch/Chain Case due to oil wetted clutch uses friction, and would not work well with slippery fully Synthetic lube. :s