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Thread: How to modify gas to oil ratios

  1. 06-04-2012, 08:09 AM #16
    Sprintcar
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    Man,

    Now I've got to go tell that McCulloch 1-72, Homelite Super 1050 Auto, both McCulloch Pro Mac 1000's, The Pioneer 1110, that I is sorry. Been running the wrong mix in em. Not to mention them half a dozen XL-12's.

    No wonder I ain't been sleepin well.

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    The OP of the Hijacked Thread Thread

    Quote Originally Posted by DSS View Post
    Now who's a midget?
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    I farted in the shop.....damn near killed everyone.

    I had a great day.
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    Quote Originally Posted by stihl sawing View Post
    same here
    Quote Originally Posted by Modifiedmark View Post
    I'll try to be better and more sensitive in the future...
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  2. 06-04-2012, 08:12 AM #17
    Steveo_supremo
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    Wow! Thats all I can say. Your trimmer will never know the difference if You run it at 50:1 just like all your other stuff.
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  3. 06-04-2012, 08:25 AM #18
    KenJax Tree
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    Quote Originally Posted by o8f150 View Post
    or just do like i do, run 45:1 in everything
    I do the same thing 3oz. To 1 gallon
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  4. 06-04-2012, 08:26 AM #19
    KenJax Tree
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    How do you keep the drops all the same size?? Sounds like a waste of time measuring drops.
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  5. 06-04-2012, 08:41 AM #20
    blsnelling
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    I like the 3oz/gallon idea. 40:1/50:1 will be fine. Just use good full synthetic oil.
    Brad - Snellerized Saws

    Have a 201T that doesn't run like you expected? Need a new one that's already modded and ready to go? PM me for details.
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  6. 06-04-2012, 08:42 AM #21
    nmurph
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    ...and to think that I make the effort to rinse the oil bottle and dump in in the gas just to make sure I get it as close to 50:1 as I can.
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    Quote Originally Posted by mweba View Post
    Ya sounds like a guessignosis to me
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  7. 06-04-2012, 09:02 AM #22
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    ...........if it ain't broke, don't fix it..........
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  8. 06-04-2012, 09:19 AM #23
    genesis5521
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    Quote Originally Posted by nmurph View Post
    You also need to know exactly how many drops of gasoline are in the gallon; you might be off by 25-30.
    I know. I got wwwwaaaayyy to much time on my hands

    Hi Murph. I like it when you chime in cause you work on these small 2 cycle engines and I value your opinion. I found this handy conversion chart on the internet. It should be pretty darn close. Click here: 15W-40 engine oil amounts converter | Automotive | Convert to units and culinary measures.

    Just used the trimmer for the first time for maybe 30 minutes. Used up almost all of the 8 ounces I put in. Almost none left to dump out. It's just a cheapie 27cc Cub Cadet model BC210 from Tractor Supply ($149). But it worked just fine. Took me maybe a minute to measure 8 ounces in to a measuring cup, add 26 drops of oil and stir it up a bit. Super simple and no big deal at all. From my chart, I knew I needed to add .04 ounces of oil. That's how I got the 26 drops.

    Here's a pic of my data and the results.

    Don <><

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    Last edited by genesis5521; 06-04-2012 at 03:42 PM.
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  9. 06-04-2012, 09:26 AM #24
    genesis5521
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    Quote Originally Posted by saxman View Post
    Hey Don, great chart. You wouldn't happen to be an engineer of some type would you? It looks like a product of engineer thinking, and that is not meant to be an insult, it's just how engineer types think. I guess I fall in to the keep life simple category. I run 50:1 Stihl Ultra Synthetic in all two cycle equipment at my place, All saws, including old blue Homelites, Lawnboy mowers, trimmers, blowers,etc. Have had no problems with any of them so I guess it is OK.Steve
    Hi Steve. I'm no engineer. I use to teach accounting and computer courses at a tech college, so I guess I'm a bit of a perfectionist. I just retired last Thursday and have wwwwaaayyyy to much time on my hands. Hence the chart.

    Don <><

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  10. 06-04-2012, 09:39 AM #25
    nmurph
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    Don, congrats on the retirement...btw, I am a college admissions director...I only wish I could retire, but that will have to wait another 20 years or so if I can stand it.
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  11. 06-04-2012, 09:45 AM #26
    jus2fat
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    Quote Originally Posted by genesis5521 View Post
    I'll only be using this thing like once every 2 or 3 months for maybe 20 minutes at a time and only during the summer. That's just twice a year and 40 minutes of annual run time. I hate to make a special batch just for that.

    Don <><
    If I were only going to be using the trimmer that small amount...I'd just buy a quart of the 40:1 premixed fuel.

    I think it's shelf life is 2 years or more..and it doesn't contain any ethanol. At ~ $6..it's not expensive for your use.
    (just my 2 worth)

    J2F
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  12. 06-04-2012, 11:00 AM #27
    zogger
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    Hey, happy retirement!

    Oh noes, now you will be forced to cut and split more wood, plus get a sunday driving muscle car to restore.....
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  13. 06-04-2012, 11:39 AM #28
    BigMoneyGrip
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    A can of Tru-Fuel would be easiest. Pour back in what you don't use.
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  14. 06-04-2012, 12:44 PM #29
    H 2 H
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    Cool

    Congrats on the retirement

    I retiired back in 98; just keep your self busy and buy plenty of saw's to play with

    I run all my saw's and string trimmers at 45:1
    Brian

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  15. 06-04-2012, 02:47 PM #30
    promac850
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    For the saws, I run 40:1. When I need to run the trimmer, it needs 50:1 as it simply will not run on 40:1. Carb passages seems to be too small for that thick of a mix.

    So what I do is mix a can of 40:1, then fill the tank on the trimmer about 2/3's full, and top off with straight gas. If figure I'm getting someting like 50:1. Every can I mix is slightly different... I get it as close as possible. Doesn't require much carb tweaking.


    btw... the seashell vpower is still e-free here in michigan... I tested it and it certainly is pure. smells a lot different too. (don't inhale large quantities, obviously)
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