4 Stroke Cleaner Than 2, Really?

Discussion in 'Propulsion' started by Jet_Love, Jun 17, 2013.

  1. Jet_Love
    Joined: Dec 2012
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    Location: little Rock, AR

    Jet_Love Junior Member

    Not about if, more like when.

    Its what the Book says anyway.
     
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  2. discovery
    Joined: Aug 2013
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    discovery Junior Member

    If we were to dissappear tomorrow, come back in 500 years and have a look, it wont look like it does now. I'm glad you dont have any offspring. Apathy gets us nowhere.

    You missed the point to my whole post, everyone is concentrating on engines and engine oils, that are relatively easy to break down. There's gear oils, greases and all sorts of other crap that takes 10 times or more to break down than engine oils out there happily leaking away.
     
  3. whitepointer23

    whitepointer23 Previous Member

    what book
     
  4. SamSam
    Joined: Feb 2005
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    SamSam Senior Member


    I'm just not into superstition, ghost stories, haunted houses, UFO's, palmistry, astrology and that sort of stuff.
     
  5. Jet_Love
    Joined: Dec 2012
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    Location: little Rock, AR

    Jet_Love Junior Member

    All right, its not just boats. Think of all the other stuff that has leaking oil. Like someone said about digging equipment, (Maybe the reason you saw no signs is it was hulled off?) dont forget cars and trucks. Every drop of oil that drips on the ground or in the lake makes to our oceans.

    Do our reefs self heal too? How long does that take? Do we have that long? They are dieing at a alarming rate you know?

    Next your going to tell me our ice isn't melting, but hey we all love boats and they need water to float.
     
  6. Wavewacker
    Joined: Aug 2010
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    Wavewacker Senior Member

    I can't see how that's possible, unless it evaporates and returns as rain.

    Every drop on the ground? What about every drop in the ground?

    Not sure how oil in Lake Maumelle gets to the ocean, didn't think it was on the Ar. River.

    I'd say a much bigger problem is septic tanks near lakes and rivers. Chemicals and agricultural runoff. I grew up on the Ozark lakes and the White River, when I was a kid I could see the bottom at 30', now it's hard to see 3' down in the old swimming areas.

    Back to 2 cycle efficiency.....:D
     
  7. ancient kayaker
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    ancient kayaker aka Terry Haines

    - open pit mine I assume. The operators of the mines I've been in were obsessive about oil loss and exhaust emissions. Less smell of exhaust down there with LHD vehicles passing every few minutes than the high street of most towns.
     
  8. ancient kayaker
    Joined: Aug 2006
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    Location: Alliston, Ontario, Canada

    ancient kayaker aka Terry Haines

    No doubt 2-strokes have improved, so have 4-strokes. A couple of decades ago every driveway had its oil patch from leaking crankcases and it was common to top up the oil between changes. Driveway oil patches have virtually disappeared and I can't remember the last time I topped up any of my vehicles between oil changes. I used to wash the engines with detergent to give my mechanic something clean to work on, now under the hood (bonnet in the UK) of my vehicles it's just been dusty since the early 90's.

    The problem of oil on lake surfaces is most likely to be an old engine, whatever stroke count. Road vehicles rust and die young so technology improves more rapidly than in boats which last longer.
     
  9. FAST FRED
    Joined: Oct 2002
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    Location: Conn in summers , Ortona FL in winter , with big d

    FAST FRED Senior Member

    Every drop of oil that drips on the ground or in the lake makes to our oceans.


    NONSENSE, go on any site where diesel powered boats are discussed and fuel contamination is always a big subject.

    The contamination comes from a tiny bit of water in the diesel, where bugs live and eat the fuel their waste is what builds on tank walls and clogs filters.

    Aircraft suffer the same problem , even after the bugs have spent hours at -50F.

    Oil is FOOD , so spilling a drop in your driveway probably doesnt make it to the grass.

    The Gulf of Mexico releases more oil annually naturally than even a big oil spill.

    It gets EATEN ! Naturally.
     
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  10. Wavewacker
    Joined: Aug 2010
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    Wavewacker Senior Member

    Agreed Fred, it's a natural substance, we probably screw it up with additives, nevertheless it is nasty stuff.

    I'd be more concerned with the secret chemicals injected into the ground that gets into the water table by fracking, really, open a tap and light it up.

    Sorry, back to OBs. :)
     
  11. discovery
    Joined: Aug 2013
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    Location: Australia

    discovery Junior Member

    I did 10 years underground as well and have seen that side of mining also. The last8 years has been in the open pit. The money for me was better in the pit.
     
  12. dskira

    dskira Previous Member

    Do you live naked in a cavern?

    [​IMG]
     
  13. DriesLaas
    Joined: Aug 2009
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    Location: South Africa

    DriesLaas Weekend Warrior

    On the subject:
    Herewith a pic of the water in the bucket I tested a very good condition johnson 4-stroke in.
    Is that the correct amount of oil, or is something wrong?
    Advanced idle only, so the temperature never went high. This might contribute to blowby around the rings perhaps?
    Point is, this particular 4-stroke is not as clean as I expected.
    Off the subject:
    I want to get this motor because it is supposedly better for the environment, and polluting the waterways I want my kids to use one day does not sit well.
    I do have a nice Suzuki 30 2-stroke in the boathouse that I am not using, but I might reconsider after seeing this...
     

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  14. waikikin
    Joined: Jan 2006
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    waikikin Senior Member

    My experience with Yamaha 4 strokes is nothing like that, looks something wrong with that engine, unless you changed the oil using that bucket ealier in the day.......................

    Jeff.
     

  15. SukiSolo
    Joined: Dec 2012
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    Location: Hampshire UK

    SukiSolo Senior Member

    Agree with above, that looks like gearbox oil leaking out at the bottom. Maybe the drain or fill needs a new washer or has come loose? Possibly seal on shaft to prop.
     
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