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  1. #1

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    ys engine after run lube.

    i have a ys 1.20 fz four stroke. it says don't use any petroleum lubes for after run oil. what oil should i use ? there are ones with teflon,should these be used............thanks

  2. #2

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    RE: ys engine after run lube.

    Hi Ron,

    Some people use Marvel mystery oil, others use AT Fluid, others use a squirt of WD40 and there are also brand name after run oils..... each option will have it's supporters and detractors. What can you get your hands on ?

    [edit] petroleum based stuff could damage any rubber bits on the engine


  3. #3

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    RE: ys engine after run lube.

    The best thing to do is get some straight synthetic glow fuel oil like Klotz. Marvel, ATF,and WD40 are petroleum.

  4. #4
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    RE: ys engine after run lube.

    geeter,
    I have used AMSOIL Dextron ATF for after run oil in my YS engines with very good results.
    If you can find a synthetic air tool oil and mix about 25% total content with the ATF that will work well.
    The reason you do not want to get any petroleum in the engine is it will kill the diaphragm.
    That being said, most the people I know with YS four stroke engines don't bother with after run oil.
    Happy flyin', Oscar
    A man that hates kids and dogs cant be all bad. But then, Ive met some dogs that I liked.

  5. #5

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    RE: ys engine after run lube.

    thanks for the info. yes wd-40 and atf are a no-no. it has to be petroleum distillate free. some use a little castor oil, i heard. the blenzall kind . not the drugstore kind. thats not degummed and can cause trouble. ................thanks again.........GOOD FLY'IN.........

  6. #6

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    RE: ys engine after run lube.


    ORIGINAL: geeter

    thanks for the info. yes wd-40 and atf are a no-no. it has to be petroleum distillate free. some use a little castor oil, i heard. the blenzall kind . not the drugstore kind. thats not degummed and can cause trouble. ................thanks again.........GOOD FLY'IN.........RON
    I've found that even degummed castor will get sticky over a long enough time. I've used Mobil 1 synthetic motor oil in all my engines with good results.

    CR
    Charley
    ccrobins@ktc.com

  7. #7
    oskartek's Avatar
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    RE: ys engine after run lube.

    Using castor as a after run oil is ok I think as so little is exposed to combustion.
    The problem with running castor in four strokes is over a long period of running 
    it tends to gum up the valve stems and guides causing them to stick.
    I prefer to run synthetics but I know some who run 2% to 5% castor.
    Higher maintenance is the only result.

    USP Castor from a pharmacy is pure and first pressing but expensive, better deal from Sig or Klotz.

    Happy flyin', Oscar
    A man that hates kids and dogs cant be all bad. But then, Ive met some dogs that I liked.

  8. #8
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    RE: ys engine after run lube.

    Synthetic oils don't "stick" to the internal parts as well as conventional oils do. If you don't over do it, IMO, any regular oil will be fine. Just don't run it through the fuel system. My FZ53 has a mylar diaphragm so no issue with oil.

    Ken
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    RE: ys engine after run lube.

    I have used performance specialties after run oil in my YS engines. Have also used Mobil 1 Ow20 or something like that it was )w anyways. Both work great. the Mobil 1 will be less money by far in the long run. About $8.00 per quart versus 8oz. for $8.00
    I want my Six Dollars!!!!

  10. #10
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    RE: ys engine after run lube.

    Over the years a lot of us have found Marvel Mystery Oil to work great. It will also free up a gummed engine. Marvel Mystery Oil was developed in 1926 for the use in air craft engines. It works for oil treatment as well as gas treatment and it cost less than $5 a quart.

    I put it in my lawn mower gas, my truck, and my O.S. engines. All you need is a few drop down the carb of your engine, and spin it over a few times.

    You can get it at any Orielly's, Auto Zone, Napa, or any other automotive supply store.

    Frank
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  11. #11

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    RE: ys engine after run lube.

    This is directly out of the OS manual for the 120

    "Do not leave unused fuel in the engine at the conclusion of a
    day's flying. Accepted practice is to cut off the fuel supply
    while the engine is still running - at full throttle - then, expel
    as much fuel residue as possible by turning the engine over
    for 5-10 seconds with the electric starter.
    Finally, inject some after-run oil through the glowplug hole and
    turn the engine over several times by hand.
    When the engine is not to be used for some months (for
    example, as between flying seasons) a worthwhile precaution
    is to remove it from the airframe and, after washing off the
    exterior with alcohol (not gasoline or kerosene) to carefully
    remove the fuel pump, carburettor with intake pipe and all
    silicone tubes and put them safely aside.
    Make sure that the engine is reasonably clean externally, then
    remove the glowplug and immerse the engine in a container
    of kerosene. Rotate the crankshaft while the engine is
    immersed. If foreign matter is visible in the kerosene, rinse the
    engine again in clean kerosene, before removing it, vigorously
    shaking off the excess and wiping it dry.
    CARE & MAINTENANCE (laying up)
    The fuel pump assembly, carburettor/pressure-regulator and
    silicone tubes must be cleansed separately in methanol or
    glow fuel. On -no account must they come into contact with
    kerosene.
    Before completely reassembling the engine, make sure that
    no kerosene remains inside that could find its way into the
    pump unit, carburettor, etc. Inject, sparingly, preserving oils,
    rust inhibitors, etc. unless approved for silicone-rubber
    products.
    An appropriate alternative here may be one of the high-quality
    synthetic lubricating oils.
    Finally, seal the engine in a heavy polyethylene bag until
    required for refitting to the airframe."

    I am sure YS is similar-but it warns of using additives unless they are approved for silicone rubber products-MARVEL OIL will harm your rubber!!!!!!!!!!!!!!!!-Use a sythetic lube oil such as klotz.

    I have been using this method for several years now and I do not have bearing troubles anymore after I quit using marvel and atf.
    \"IF YOU HAVE TOO MANY AIRPLANES -FLY BOLDLY AND REDUCE YOUR NUMBER\"

  12. #12

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    RE: ys engine after run lube.

    I am always amazed at the damn fool crap you can read on forums. Some of the people responding are ten and have never owned an engine. Most of the people responding have never owned a YS engine. You get the answers from 40 years ago - C.F. Lee. YS engines are full of silicone rubber seals, O-rings, diaphragms. Performance Specialties (Dave Shadel) AF oil is specific to YS engines. Mobile 1 and Mobile 1 pure synthetic ATF will not harm silicone but may not be a good after run oil. Castor ? Really ? Richard Verano loves you guys since half of his business is repairing engines that were pumped full of after run crap.

  13. #13

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    RE: ys engine after run lube.

    I would not recommend WD-40 for any longer term protection.  First it is a solvent and it is said the the WD stands for "Water Disperasnt."  It will evaporate.  I used compressor oil with is generally non-detergent and seems to do the job well.  I have also used Auto Tranny fluid and Shaler Rislone. 

  14. #14
    Ernie Misner's Avatar
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    RE: ys engine after run lube.

    Unless the engine is still new WD-40 will break loose micro rust particles. Those particles will then get run through the engine on start up. I've seen boat guys use it though but they use it from day one.

    Ernie Misner

  15. #15

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    RE: ys engine after run lube.

    wd -40 is no good for ys engines. to answer my own question. i'm useing mobil 1 as an after run. the ultra lube is no longer available i don't think........ mobil 1 won't hurt it in fact they recommend it on the ys forum...........thanks

  16. #16
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    RE: ys engine after run lube.


    ORIGINAL: Four Stroker

    I am always amazed at the damn fool crap you can read on forums. Some of the people responding are ten and have never owned an engine. Most of the people responding have never owned a YS engine. You get the answers from 40 years ago - C.F. Lee. YS engines are full of silicone rubber seals, O-rings, diaphragms. Performance Specialties (Dave Shadel) AF oil is specific to YS engines. Mobile 1 and Mobile 1 pure synthetic ATF will not harm silicone but may not be a good after run oil. Castor ? Really ? Richard Verano loves you guys since half of his business is repairing engines that were pumped full of after run crap.

    Four Stroker, I have to agree with you. It's really something to see so many self proclaimed experts with all this advice that they have little or no knowledge about.

    I ask, are there "o" rings in the fuel injection system of a car? Are there rubber, silicone seals, or diaphrams in a automobile transmission?

    Now I ask, are there "o" rings in the crank case, air passages and combustion chamber of a YS or any other 2 or 4 stroke engine? Did anyone say to run the after run oil through the fuel lines? Does Castor Oil have rust inhibitors in it? Does Castor Oil gum up after sitting up?

    Everyone has their own formula for making after run oil. From mixing ATF with Castor and ATF with Mobil One.

    Marvel Mystery Oil has been around for a long time. Ask the owner of a 1939 Cub if he uses Marvel Mystery Oil in his fuel and oil? 9 times out of 10 he will say that he does.

    I've got engines that I am still flying that were made in the 70's. Still running strong and all had Marvel Mystery Oil used as an after run oil.
    So, If they have lasted this long, then I will continue using Marvel Mystery Oil.

    Maybe it's disolved all the "o" rings in my crank case. Because I haven't been able to find any in there.

    Frank

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  17. #17

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    RE: ys engine after run lube.

    ORIGINAL: countilaw


    Have you owned or run a YS engine? They are NOT like other model engines on the market. They contain silicone parts inside the crankcase that will be destroyed due to petroleum based products. We are not referring to fuel lines or carb o-rings. A tank pressure fed YS engine has fuel pressure regulator built into the crankcase that contains a silicone diaphragm. It will come in contact with anything that is injected into the crankcase. It will then swell and cease to function properly.
    Using your MM oil in standard 2 strokes and 4 strokes is just fine, lots of folks have done it for years. YS's ARE NOT STANDARD ENGINES!!



    Four Stroker,** I have to agree with you.*** It's really something to see so many**** self* proclaimed experts** with all this advice that they have little or no* knowledge about.***

    I ask,** are there** ''o'' rings in* the fuel injection system of a car?*** Are there rubber, silicone seals, or diaphrams in a automobile transmission?

    Now I ask, are there** ''o'' rings in the crank case,* air passages and combustion chamber of a* YS or any other* 2 or 4* stroke engine?**** Did anyone say to run the* after run oil through the fuel lines?****** Does* Castor* Oil have** rust inhibitors in it?** Does Castor Oil gum up after sitting up?*

    Everyone has their own** formula* for making after run oil. * From mixing * ATF with Castor and* ATF with Mobil One. * *

    Marvel Mystery Oil has been around for a long time. * Ask* the owner of* a* 1939 Cub if he uses* Marvel Mystery Oil in his fuel and oil? ** 9 times out of* 10* he will say that he does. **

    I've got engines that I am still flying* that were made in the* 70's. * Still running strong and all had Marvel Mystery Oil used as an after run oil. *
    So, * If* they have lasted this long, ** then * I will continue using * Marvel Mystery Oil.

    Maybe it's * disolved all the* ''o'' rings in my crank case.* Because I haven't been able to find any in there. *

    Frank*



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