adam
Lv 5
adam asked in Cars & TransportationMotorcycles · 1 month ago

has anyone used amsoil 20wt50 in all 3 holes in their Harley Davidson? ?

I had our parts guy set me up with oil, transmission fluid and primary fluid. When I got home I noticed he gave me 4 quarts of 20wt30 amsoil and its supposed to be good in all 3 . I however always use primary fluid. Transmission fluid and motor oil respectively. I read online that its fine. I know lots of shops use one oil in all 3 but Im old school and never have. Im home .Bike is on my lift and I dont feel like going  out just to get a quart of transmission oil if this stuff works. 

9 Answers

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  • Anonymous
    1 month ago

    Return the order and tell the parts guy to order the oils that are recommended in the manual.

  • adam
    Lv 5
    1 month ago

    LOL Typo on the 20 wt30, he gave me 20 wt 50. I put it back on the shelf this morning and grabbed a quart of amsoil trans fluid. Im on the fence about one fluid in all 3 components. Our shop does that but I Dont. I also dont with any customers bike on my lift but thats just me. Next time? Grab stuff myself and ignore our parts guy!

  • 1 month ago

          You ask about 20w-50, yet text says you received  20w-30?

        I'd Never run in 20W-30  In  a H/D in Arizona. Especially Phoenix-Metro or Yuma.  Not even in Show Low in winter. .I used 20W-50  even in my cool-running Honda in Tucson..

       I've used Harley V Twin  Synth.20W-50  oil in all 3.  Amsoil Synth, later,  yes. Even Mobil 1 20w-50w when I had to  save for a wedding ring. All worked fine.(Bike is an 88" Twin Cam)

         Someone on a forum "swore" Dexron IV was "best" for primaries. I can Not tell any difference. Still,  that first gear CLUNK !  when cold.  I  think, only  "difference" would be going to a Barnett clutch..

       (Talk about : " paying for a name"..I'm surprised Harley doesn't void warranty if U don't use Their oil.  I get Amsoil competitively at  ACE hardware on 22nd. What is High is Royal Purple..lotta hype for it  )  

          I run 85W-140  synth in my gearbox. 40 K on her, no problems shifting, if not starting out cold in 1st.

     EDIT: The discussion is Not FXR's that only have one fill hole. Apples and Oranges. Harley Orange.

  • Ray J
    Lv 7
    1 month ago

    I use Canola oil in my 82 FXR.  Makes the clutch grab like crazy.

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  • Anonymous
    1 month ago

    Return the order and tell the parts guy to order the oils that are recommended in the manual.

  • 1 month ago

    I like amsoil I just always use their actual trans fluid not 20wt 30 motor oil

  • Ron
    Lv 7
    1 month ago

    you should use the proper weight gear oil in the tranny. and as someone else pointed out, **** amsoil. You're paying good money for a name. Any quality motor oil that meets the specs will do.

  • ?
    Lv 7
    1 month ago

    I would never buy Amsoil products. Way over priced and no better than many other brand names. 

  • Anonymous
    1 month ago

    Send the order back, you asked for oil, tranny, and primary fluid.

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