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Sae 30 used in chainsaw fuel?

Discussion in 'Chainsaw' started by Nature1, Mar 4, 2009.

  1. Nature1

    Nature1 ArboristSite Lurker

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    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?
     
  2. tallfarmboy

    tallfarmboy AboristSite Guru

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    What was he smoking?? Because I want some of it!:dizzy:

    TFB
     
  3. clutch25

    clutch25 ArboristSite Operative

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    16:1 with regular motor oil????

    WTF!?!??:dizzy:
     
  4. BloodOnTheIce

    BloodOnTheIce Account Hold

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    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. Mad Professor

    Mad Professor Addicted to ArboristSite

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    He just came out of a coma since 1965, he forgot to mention to use non-detergent SAE 30
     
  6. BobL

    BobL Addicted to ArboristSite

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    +1
    Old school formula for old school saws.
     
  7. GASoline71

    GASoline71 Mr. Nice Guy (Moderator)

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    LMAO... :laugh:

    I hope you didn't listen to him.

    Gary
     
  8. Nailgunner

    Nailgunner ArboristSite Operative

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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.
     
  9. Nature1

    Nature1 ArboristSite Lurker

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    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.
     
  10. Dan_IN_MN

    Dan_IN_MN Addicted to ArboristSite

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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!:greenchainsaw:) 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
     
  11. epicklein22

    epicklein22 ArboristSite.com Sponsor

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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.:dizzy: Buy what is on sale and start slaying that wood.:chainsaw:




























    Just Kidding:yoyo: I hate oil threads. :bang::hmm3grin2orange::hmm3grin2orange:
     
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  12. DEG305

    DEG305 ArboristSite Operative

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    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!
     
  13. cord arrow

    cord arrow Addicted to ArboristSite

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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....
     
  14. heimannm

    heimannm Addicted to ArboristSite

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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.
     
  15. Rookie1

    Rookie1 Addicted to ArboristSite

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    Wow,Epic you had me worried for a minute. I thought you lost you marbles. Good one.:cheers:
     
  16. Mike Van

    Mike Van Addicted to ArboristSite

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    I've got a 2 cycle Poinjar rockdrill/jackhammer - I've always used ND 50 weight Valvoline at 1 qt. to 5 gal gas. Thats what the book recommended some 25 years ago. Lotta hours on that thing, small wonder my back acts up.
     
  17. thejdman04

    thejdman04 Addicted to ArboristSite

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    Thats advice I wouldnt listen too.
     
  18. carvinmark

    carvinmark Addicted to ArboristSite

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    :agree2:
     
  19. Austin1

    Austin1 Addicted to ArboristSite

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    Oil threads are fun! I actually did what you did for real! Except I used 10w-30 new oil from my tool box and took the fuel line off my carb on my 68 chev cranked it over and filled up a plastic coke bottle then added the engine oil eye balled the mix most likely something crazy like 25-1 then dumped it in my 3.7 Eager Beaver. It was Sept and the sun was setting and it looked like I started a Forrest fire but I got my wood!
    I have to admit I have been running the same oil for the last 15 years and now it is a syn blend and smells real good too and no it's not 10w-30!
    The saw is still going just like the day I bought it no ill effects for running one tank of 10w-30 mixed fuel through it.
     
  20. Raymond

    Raymond Addicted to ArboristSite

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    If STIHL thought that putting SAE 30 oil in the fuel was better, they would put it in their bottles.
     

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