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  • Can we standardize on one two-stroke gas:oil mix or not?

    From Lars Anders@21:1/5 to All on Sat Apr 15 17:48:24 2023
    XPost: alt.home.repair

    I just replaced the primer bulb in a 2-stroke engine which says it's 50:1
    oil mix but I have some that are 32:1 and 40:1 but if I can help it, I
    don't want to stock three different mixes.

    If I choose one of those three (30:1, 40:1 & 50:1), how do I make an
    informed choice for any given two-stroke engine?

    What's the advantage & disadvantage of the ratios?

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  • From Oscar@21:1/5 to Lars Anders on Sat Apr 15 14:16:28 2023
    XPost: alt.home.repair

    Lars Anders wrote:
    I just replaced the primer bulb in a 2-stroke engine which says it's 50:1
    oil mix but I have some that are 32:1 and 40:1 but if I can help it, I
    don't want to stock three different mixes.

    If I choose one of those three (30:1, 40:1 & 50:1), how do I make an
    informed choice for any given two-stroke engine?

    What's the advantage & disadvantage of the ratios?



    Buy a good oil and can mix at 100:1

    https://amsoilcontent.com/ams/lit/databulletins/g1987.pdf
    --
    If the left could compete in the realm of ideas, they wouldn't want to censor us.

    If the left were truly a majority, they wouldn't need to censor us.

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  • From Charlie+@21:1/5 to [email protected] on Sun Apr 16 07:46:45 2023
    XPost: alt.home.repair

    On Sat, 15 Apr 2023 17:48:24 +0200, Lars Anders
    <[email protected]> wrote as underneath :

    I just replaced the primer bulb in a 2-stroke engine which says it's 50:1
    oil mix but I have some that are 32:1 and 40:1 but if I can help it, I
    don't want to stock three different mixes.

    If I choose one of those three (30:1, 40:1 & 50:1), how do I make an
    informed choice for any given two-stroke engine?

    What's the advantage & disadvantage of the ratios?

    Depends on the clearances and bearings used in each engine manufacture.
    IMHO it would not be a sensible economy!
    Use SAE30 Mineral Oil. (Single weight not multigrade).
    If you like you can make up one mix and then adjust it for other motors
    my chart made many years ago reads:
    25:1>>40:1 add Pet till = 1.6 orig.vol.
    25:1>>50:1 add pet till = 2x orig.vol.
    40:1>>50:1 add pet till = 1.25 orig.vol.
    40:1>>25:1 add oil @ 15ml per liter
    50:1>>25:1 add oil @ 20ml per liter
    C+

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