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Thread: Sae 30 used in chainsaw fuel?

  1. 03-04-2009, 02:26 PM #1
    Nature1
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    Sae 30 used in chainsaw fuel?

    A local small engine repairman told me that the best thing to use in two stroke engines is 8 oz of sae 30 motor oil with 1 gallon of premium gas. He said that using the regular two-cycle oil will cause it to seize under constant load. He has numerous vintage saws and string trimmers that have only ran on this mixture without fail. I've talked to many old-timers who have supported this theory. My Stihl dealer said that regular motor oil doesn't have the additives to keep it mixed with the gas. I've always ran the same brand of oil as the machine I'm using (I.e. Stihl oil in my saws). Does anyone have any experience with this?
    Work saws: Stihl MS250 x 3

    Personal saws: Stihl MS260
    Stihl 026 PRO x 2
    Stihl 029
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  2. 03-04-2009, 02:28 PM #2
    tallfarmboy
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    What was he smoking?? Because I want some of it!

    TFB
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  3. 03-04-2009, 02:28 PM #3
    clutch25
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    16:1 with regular motor oil????

    WTF!?!??
    Looking for John Deere 55V parts.
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  4. 03-04-2009, 02:33 PM #4
    BloodOnTheIce
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    Quote Originally Posted by Nature1 View Post
    A local small engine repairman told me that the best thing to use in two stroke engines is 8 oz of sae 30 motor oil with 1 gallon of premium gas. He said that using the regular two-cycle oil will cause it to seize under constant load. He has numerous vintage saws and string trimmers that have only ran on this mixture without fail. I've talked to many old-timers who have supported this theory. My Stihl dealer said that regular motor oil doesn't have the additives to keep it mixed with the gas. I've always ran the same brand of oil as the machine I'm using (I.e. Stihl oil in my saws). Does anyone have any experience with this?
    This works if your running 50's vintage saws. My old Homelites ran "One pint of SAE 30W to one gallon of gas" according to the directions on the saw. The best advice to saw longevity is fresh gas with a good quality 2 stroke oil, a sharp chain, and a clean air filter.
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  5. 03-04-2009, 02:35 PM #5
    Mad Professor
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    Quote Originally Posted by clutch25 View Post
    16:1 with regular motor oil????

    WTF!?!??
    He just came out of a coma since 1965, he forgot to mention to use non-detergent SAE 30
    Homlite 150, super XL (my first saws still running)

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  6. 03-04-2009, 02:36 PM #6
    BobL
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    Quote Originally Posted by BloodOnTheIce View Post
    This works if your running 50's vintage saws.
    +1
    Old school formula for old school saws.
    Latest Project, BIL Mill with 880 , The BIL mill with 076, Log Lifter 2, BIL mill with 60" bar , Minimill, Cant Dragon, Log Lifter, Small milling rig, My first mill
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  7. 03-04-2009, 02:37 PM #7
    GASoline71
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    LMAO...

    I hope you didn't listen to him.

    Gary
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    LMAO...
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  8. 03-04-2009, 02:41 PM #8
    Nailgunner
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    exactly the same recipe as my old Villiers bike engine called for

    I think modern oils are a bit better than that.
    Arsenal inventory:
    Husqvarna 266SE (195 PSI!)
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  9. 03-04-2009, 02:44 PM #9
    Nature1
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    Quote Originally Posted by BloodOnTheIce View Post
    This works if your running 50's vintage saws. My old Homelites ran "One pint of SAE 30W to one gallon of gas" according to the directions on the saw. The best advice to saw longevity is fresh gas with a good quality 2 stroke oil, a sharp chain, and a clean air filter.
    I was thinking that "back in the day" that the saws were designed to run on motor oil because that's all there was available. I've got several relatives trying to get me to switch but I couldn't bring myself to doing it.
    Work saws: Stihl MS250 x 3

    Personal saws: Stihl MS260
    Stihl 026 PRO x 2
    Stihl 029
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  10. 03-04-2009, 02:45 PM #10
    manyhobies
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    My (well FILs) David Bradley calls for 30w non-detergent motor oil 16-1. I'm sure someone got real tired of all the smoke and plug fouling and started developing better oil to mix with the gas.

    Currently, it's sitting in the garage with some used oil in the cylinder 5-30w (I know not what the label calls for!) to try to get the piston freed up. I poured it into the cylinder until it flowed out the "muffler (if you can call it that???) and then tipped the saw away from the exhaust and poured some more in. When I came back there was oil on the floor that came out of the carb.

    What do you guys run in your old saws that call for this mixture of 30w engine oil? If you go with 2 stroke oil, how much oil do you go with?

    Dan
    Dan


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  11. 03-04-2009, 02:46 PM #11
    epicklein22
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    This one time I was out in the woods and ran out of mix. I really needed the wood and it was almost dark, so I syphoned some gas from my pickup truck and then cracked open my oil drain plug and added it to the gas container. Threw it in the saw and got that log cut right up. No way I was gonna dump the gas out, so I used it up the next time I went cutting. Didn't do anything to my saws at all. You guys are too anal about saw mix. Buy what is on sale and start slaying that wood.




























    Just Kidding I hate oil threads.
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  12. 03-04-2009, 02:46 PM #12
    DEG305
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    Smile

    Back in the day (1950's) on the farm the Mac.33B got a lot of use cutting fence posts and cutting enough wood to keep the home warm during those long,cold winters, there was no such thing as special purpose oil with special additives to keep the oil mixed in the gas. As I remember we used to dump a small amount of 30# Esso motor oil then fill the tank on up with whatever Esso blend gas that was delievered to the farm. That old Mac was still running good when Dad traded it for a big Homlite, the modle with the transmission(gear drive or directdrive) and that also was mixed the same and never had any problems with it. The only difference between then and now is R P M's, and lots of them!
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  13. 03-04-2009, 02:49 PM #13
    cord arrow
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    If you've ever read tests on this... I recall the dirt bike mags throwing in some good ol' motor oil when reviewing the current crop of two cycle oils...the head temps were unreal....
    i'm old & i'm orange........
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  14. 03-04-2009, 03:01 PM #14
    heimannm
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    My computer is currently not functioningor I'd show you a copy of a service bulletin from McCulloch changing their recommendation from 16:1 to 20:1 using 40 wt or 40:1 using McCulloch brand 40wt.

    I think is would be safe to say that any old saw can be safely run on today's high quality mix at 40:1 without fear. At least, that's what I do and have not had any issues so far.

    Mark

    Oh, by the way, I did run part of a tank of 16:1 through my Super Wiz 66 when I first got is, after all that's what the instructions on the saw said to do. Fortunately the carburetor had a severe leak and most of that stuff ran out before I could foul it up even worse.
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  15. 03-04-2009, 03:05 PM #15
    Rookie1
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    Quote Originally Posted by epicklein22 View Post
    This one time I was out in the woods and ran out of mix. I really needed the wood and it was almost dark, so I syphoned some gas from my pickup truck and then cracked open my oil drain plug and added it to the gas container. Threw it in the saw and got that log cut right up. No way I was gonna dump the gas out, so I used it up the next time I went cutting. Didn't do anything to my saws at all. You guys are too anal about saw mix. Buy what is on sale and start slaying that wood.




























    Just Kidding I hate oil threads.
    Wow,Epic you had me worried for a minute. I thought you lost you marbles. Good one.
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