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#3310966 - 03/13/14 07:01 PM Will a Oil/Water Emulsion Freeze Up?
George7941 Offline


Registered: 05/10/05
Posts: 1767
Loc: Toronto, Canada
Something is severely contaminating engine (Toyota 4Y) oil in our forklift at work. When I first saw the contamination I figured head gasket leak, so I had an oil sample analysed at a good lab, run by the large local CAT dealer. They found lots of water but no glycol.

So I have been checking various systems on the engine but keep coming back to an antifreeze to oil leak through a blown headgasket. I think the lab made an error and missed the glycol.

Today I transferred the drained contaminated oil from the engine from one container to another. It had been sitting outside with last night's temperature being -17C and today's daytime temperature being -8C. I noticed that there were no chunks of ice in the oil/water mixture. Should I conclude that this indicates antifreeze contamination and not water contamination?

The water is really mixed in with the oil. After a week of sitting motionless, there has been so separation whatsoever of water from the oil in the drained oil container.

I am going to try an experiment tonight and leave a mixture of oil and water outside and see if it ices up. The only problem is that I wont be able to mix the water into the oil as thoroughly as the engine did.
_________________________
2006 GMC Sierra 4.3l, NV3500,G80 , Formula Shell Synthetic 5W30,Dexcool.
1987 BMW R80 - sold
2015 Honda CBR300R

Staying out of the right lane a lot.

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#3310995 - 03/13/14 07:44 PM Re: Will a Oil/Water Emulsion Freeze Up? [Re: George7941]
spasm3 Offline


Registered: 05/30/10
Posts: 6392
Loc: out there
Is the coolant level dropping in the forklift? That should tell you. Does the forklift get run enough to get good and hot?

I wonder if its a sodium add pack , could the water form an ionic bond with some of the sodium add and not freeze.


Edited by spasm3 (03/13/14 07:54 PM)
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#3311019 - 03/13/14 08:00 PM Re: Will a Oil/Water Emulsion Freeze Up? [Re: George7941]
George7941 Offline


Registered: 05/10/05
Posts: 1767
Loc: Toronto, Canada
I can't tell yet if the coolant level is dropping.

Good thing you mentioned add pack, I was going to use some old power steering fluid in my overnight experiment but I should use some Rotella 15w40 which is what was in the engine.
_________________________
2006 GMC Sierra 4.3l, NV3500,G80 , Formula Shell Synthetic 5W30,Dexcool.
1987 BMW R80 - sold
2015 Honda CBR300R

Staying out of the right lane a lot.

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#3311027 - 03/13/14 08:06 PM Re: Will a Oil/Water Emulsion Freeze Up? [Re: George7941]
spasm3 Offline


Registered: 05/30/10
Posts: 6392
Loc: out there
I looked up a uoa on rotella, not much sodium. I don't know if calcium would have a similar effect.
_________________________
13 elantra 46k 5w30 ultra
03 chevy avalanche67k pyb
02 saturnsc1 66k 0w40 castrol
01 saturnsc1 185k being rebuilt
93 ciera 79k 5w30 havo

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#3311067 - 03/13/14 08:50 PM Re: Will a Oil/Water Emulsion Freeze Up? [Re: George7941]
George7941 Offline


Registered: 05/10/05
Posts: 1767
Loc: Toronto, Canada
I just mixed up 4 parts Rotella 15w40 and one part water in a tomato can and stirred for five minutes with a screwdriver but it did not mix very well. I could still see globules of water. The can is in my shed overnight and I fully expect to see chunks of ice tomorrow morning but it is not going to prove anything because I could not mix it well enough.
_________________________
2006 GMC Sierra 4.3l, NV3500,G80 , Formula Shell Synthetic 5W30,Dexcool.
1987 BMW R80 - sold
2015 Honda CBR300R

Staying out of the right lane a lot.

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