Heavy duty Spectro Primary oil

Discussion in 'Softail Models' started by awall, Jun 21, 2011.

  1. awall

    awall Member

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    Does anyone use the Spectro heavy duty primary oil. I hear alot about the Spector 6 speed oil for the transmision but havn,t seen anything on the primary. Does anyone here use it and recomend it?
     
  2. mjb582003

    mjb582003 Member

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    I do use both Spectro Heavy Duty Primary and Spectro Platinum 6 Speed Tranny oils, no complaints.
     
  3. dbmg

    dbmg Experienced Member

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    +1 The difference is amazing....
     
  4. TQuentin1

    TQuentin1 Well-Known Member Staff Member Moderator

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    Me too.

    TQ
     
  5. doctordoug

    doctordoug Account Removed

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    Me three, Also use Spectro Platinum 20-50 full synthetic motor oil. There are several good choices out there but Spectro is one of the better ones. If Smitty uses it you know it must be good!
     
  6. awall

    awall Member

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    Thanks alot for the ersponses. I think I will be changing to them both.
     
  7. JBC2565

    JBC2565 Junior Member

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    I use both spectro gl-5 (platinum 6-speed) in tranny and spectro heavy duty primary. No problems. Just switched primary to spectro from formula + (spectro primary fluid was at metric dealer where I get tranny fluid). I had no complaints about formula + and don't notice a difference with the spectro primary fluid. Just one less stop when I got the spectro tranny fluid.