water in oil - Dodge Dakota Forum

Subject: water in oil
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I can't belive Dodge isn't doing anything about the problem with the 4.7l white foam in the oil filler neck. Oh ya the baffle and cap are a good fix, what a joke. Then you get people on this board that say not to worry. I've filed complaints with the dealer and Dodge. I can't see having water mixing with the oil being good at all.

kawzx7
Dodge Dakota
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2/20/2002
13:26:04

RE: water in oil
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Glynn:

Are you aware that water vapor is present in virtually all oil systems? I am not defending anyone, but if you tore open any engine filler in winter time or cold weather you will probably find this type of condensation. Or better yet, measure the amount of water present in your oil when you drain it(obviously a lab experiment).

It just so happens that DCX in their infinite wisdom decided on a filler neck that is plastic and away from engine heat, i.e. condensation will rise and build right there. I am not saying don't worry, but I'm not. The fix will prevent people from freaking out like I did the first time I saw it, or so they hope.

Just my $0.02.

Chris

Knobbyman
*GenIII*

2/20/2002
14:14:42

RE: water in oil
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Just out of curiousity.. Because I probably won't check this post. But isn't Oil heaver then water? won't the water stay in the neck while the oil goes around the engine?

'01 Graphite QC 4x4
4.7 3.55 LSD
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kawzx7
Dodge Dakota
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2/20/2002
15:03:37

RE: water in oil
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Not really.

Water in oil won't necessarily mix, but they will travel around together. Any intake air is gonna have moisture in it. When the engine gets hot, the water will boil out or vaporize and take some bits of oil with it. Then when the engine shuts off and cools, the foaming occurs at or near the colder parts of the motor, just plain condensation.

The light brown color of the foam is caused by the water molecules taking some oil up the pipe, or mixing with oil already stuck to the oil filler pipe.

Later
Chris

Art
Dodge Dakota
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2/25/2002
16:53:17

RE: water in oil
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kawzx7 you are forgeting one thing when it gets plugged bad enough there is no way for your PCV system to work as the PCV vents from the filler neck,that is the major problem

Bruce P
Dodge Dakota
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2/25/2002
21:04:40

RE: water in oil
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The white "foam" you see in the oil-filler tube is an oil-water EMULSION. The oil and water have "mixed" to a degree. (that is why it is called an emulsion)

Check out the following link that is DCs official response about this phenomena.

http://www.geocities.com/natedak2k/Oil_cond_TSB.jpg

kawzx7
Dodge Dakota
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2/28/2002
11:47:37

RE: water in oil
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If it gets plugged that bad! I don't see the big deal myself. I cleaned the emulsion before, and when adding engine oil, I think it will force the emulsion back down into the system. If you went long mileage in cold weather without changing oil, maybe what you say about the filler neck blockage would be true.

Chris

Art
Dodge Dakota
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2/28/2002
13:50:41

RE: water in oil
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It has nothing to do with long mileage? it has to do with alot of short trips and damp weather and f**ked up design

Gary Kocsis
Dodge Dakota
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3/27/2002
13:46:52

RE: water in oil
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1) Oil IS NOT heavier than water, water is heavier than oil, that is why
oil floats on top of water. try it out, take a bucket of water
and put some oil in it.
2) PCV system can be clogged, this system is supposed to vent the
crankcase for this very purpose.

I had an old dodge pick-up that was producing a lot of foam and took it to a mechanic, mechanic want to replace head gaskets, I messed around and found the PCV line into the manifold was totally blocked. I cleaned it with carb cleaner and my foaming problem went away.

QUADMAN
Dodge Dakota
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3/27/2002
17:49:07

RE: water in oil
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I disagree gary. Oil is heavier than water. If you pour equal amounts of water and oil into a bucket the oil will settle to the bottom.

QUADMAN
Dodge Dakota
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3/27/2002
17:58:04

RE: water in oil
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Ok seems I have a mixed set of findings. I just tried my lil experiment with cooking oli and the water was heavier. I tried it again with some burnt motor oil and the oil is heavier. So I'm not really sure of what to say.

JoeK
Dodge Dakota
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3/29/2002
10:35:12

RE: water in oil
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Water is normally denser than oil (check out any bottle of Italian Dressing). That's why a drop of oil on a puddle of water gets that rainbow sheen (oil floats on top and spreads out). However, motor oil has so many additives that its density is raised so much that it could actually get heavier than water (I believe clean motor oil is still lighter than water, though it probably depends on the brand). When you burn it, it chemically changes to something other than oil, which is even denser. Try putting a quart of 10W-40 in your wife's best cookware and put it on your stove at high heat for a few hours - its volume will go down, therefore its density goes up. By the way, I take no responsibility for the beating your wife will probably give you or for you burning down your house with this experiment!

Joe

DodgeMan
Dodge Dakota
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3/29/2002
11:19:10

RE: water in oil
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Oil is lighter than water. thats why they say don't use water to put out an oil fire because the oil will spread on top of the water and make ir worse. and you probly all heard about oil spills in the ocean. well that oil is on top of the water. watch Free Willy and there was a oil spill and a fire the oil was on the water and the fire spread. if you change the oil like burning it. it shrinks and becomes more dence like someone else already said.

QUADMAN
GenIII

4/11/2002
12:09:28

RE: water in oil
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I really don't understand all of the commotion over the white emulsion. It is in EVERY engine. You can just see it better in ours because dodge was trying to make it a bit easier for us to add oil. Like they have posted, it won't hurt the motor.

YOUR ONLY WORTH WHAT YOU OWE!
3" Body Lift, 33x12.50x15 MTR's, Procomp Prerunner Lightbar, Flow 40 with duals, K&N Drop-in

Gord
Dodge Dakota
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4/11/2002
19:49:33

RE: water in oil
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If you are worried about it like I was. Use an oil additive like Rizlone. That will clean it right up.

kawzx7
Dodge Dakota
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4/12/2002
08:26:05

RE: water in oil
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***CORRECTION TO ABOVE POST*******

Spelling is Rislone, not Rizlone. I searched forever for Rizlone with no luck.

Thanks for the info though Gord, I will check it out this wlnd.

Later!
Chris

Gord
Dodge Dakota
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4/12/2002
21:05:59

RE: water in oil
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Sorry. :oP

susan
Dodge Dakota
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11/24/2004
18:56:59