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Old 09-14-2017, 11:44 PM   #21
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Re: Harvey wins this round: my submerged lawnmower

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Old 09-15-2017, 02:52 PM   #22
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Re: Harvey wins this round: my submerged lawnmower

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Originally Posted by Tourmeister View Post
I have never tried it, but I have been told that you can use kerosene or diesel to flush the oil system multiple times to get it clean before you start putting oil back in the system. This is MUCH cheaper than using oil, even if you use some kind of cheap oil. I was told to install new filter, put in the diesel or kerosene, make sure the spark plug is removed, then crank the engine to get everything circulating through all the little lines and ports. Jumper cables and/or a spare battery might be needed depending on how much cranking and flushing it takes. Once you think the system is mostly clean, do the last flush with oil and then top off with fresh oil.

Diesel is hygroscopic, meaning it will absorb water until it becomes saturated. Of course, once you do this, you will not want to use the diesel in any motors. But it would probably still work for lighting a back yard bonfire or something similar.
all correct, the only down side is, what to do with the now contaminated diesel .

and understand the diesel is really only going to absorb moisture.. That water film, that drop of watter hiding behind a boss in the engine.

the flushing of water with diesel is more using the diesel to "move" or "flush" IOW carry the water with it on the way out.... so yes 5 gal of diesel, and the motor over a large plastic tub, and repeatedly "flushing" the motor with that diesel to move the water out and absorb some along the way works pretty well.
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Old 09-15-2017, 05:02 PM   #23
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Re: Harvey wins this round: my submerged lawnmower

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I submerged a dirt bike in a water crossing once. I changed the oil approx. 12 times before it stopped looking milky.
I was there that day. Then 3 years later ended up buying that bike from you but forgot about the submarine ride in Peach Creek. Lol

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Old 09-16-2017, 01:59 PM   #24
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Re: Harvey wins this round: my submerged lawnmower

Three oil changes later and still not clean.
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Old 09-16-2017, 05:12 PM   #25
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Re: Harvey wins this round: my submerged lawnmower

My bigger concern would be the hydrostatic transmission. If that is vented, as my Kubota is, water may have worked its way in there as well. I'd drain and have a look at the contents. You can always pour it back in if it's clean.
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Old 09-16-2017, 09:03 PM   #26
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Re: Harvey wins this round: my submerged lawnmower

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Originally Posted by aggie81 View Post
My bigger concern would be the hydrostatic transmission. If that is vented, as my Kubota is, water may have worked its way in there as well. I'd drain and have a look at the contents. You can always pour it back in if it's clean.
he did.

you got to get the engine good and hot and it will cook any water off.
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Old 09-17-2017, 06:58 AM   #27
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Re: Harvey wins this round: my submerged lawnmower

Aye, I drained it twice now, will refill it and see how it looks.
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Old 09-17-2017, 09:37 PM   #28
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Re: Harvey wins this round: my submerged lawnmower

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Diesel is not hygroscopic in the slightest. That's why diesel powered vehicles all have water separator drains.
You use diesel in a engine because it acts like a solvent and cleans out sludge and goo very well.
Quote:
Hygroscopicity:

Diesel fuel is highly hygroscopic, meaning it readily absorbs water from moisture in the air. Water contamination in diesel fuel is of particular concern as it can lead to the corrosion of steel components and the promotion of microbial growth.
From here,

http://www.refuelsystems.com/en/caus...ater-in-diesel

Quote:
Dissolved water, sometimes called entrained water, is the result of diesel fuel being hygroscopic. That means that fuel has the ability to attract and hold water from the environment, whether it is from humid air or condensation on the wall of a fuel tank. And as the fuel temperature in the tank increases, so does the amount of water that can be dissolved and held in solution in the fuel.
From here,

http://www.the-triton.com/2016/03/wa...s-worst-enemy/

It will absorb water, but only until it is saturated. After that, it will start to just shove the remaining water through the system. Once the big pockets of water are gone, fresh diesel will help remove water from the places that are hard to mechanically flush, but which are still exposed to the diesel.
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