Oil Grade Selection -

Discussion in 'Lycoming & Continental' started by freerangequark, Jan 22, 2018.

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  1. Jun 17, 2018 #21

    TFF1

    TFF1

    TFF1

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    Racing is a whole different game. I would bet the winners are using thinner oil than any sane person would put in an air cooled engine.
     
  2. Jun 17, 2018 #22

    EAABipe40FF

    EAABipe40FF

    EAABipe40FF

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    Phillips 20-50 plus cam guard but frankly I'm running well used and/or worn engines and not enough to know any better....
     
  3. Jun 18, 2018 #23

    Chris McMillin

    Chris McMillin

    Chris McMillin

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    No TFF1, just normal W80. 40 wt. Changed it back to 50 before I flew home. Flew more contests after swapping the propeller back to stock. 99% of the Biplane Class are acro planes with short props and taped on fairings for a week, then back to IAC action for the next 51 weeks ( here in AZ anyway).
    Chris...
     
  4. Jun 19, 2018 #24

    TFF1

    TFF1

    TFF1

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    40wt is not going to hurt most engines. My point is that racers don't tell all secrets. I bet there are some out there running 20wt with special clearances. Not duel purpose planes. Just the go or blow people.
     
  5. Jun 19, 2018 #25

    Chris McMillin

    Chris McMillin

    Chris McMillin

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    All two of them... Yes, Phantom and Miss Gianni (which hasn't flown in ten years ) might.
    Chris...
     

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