| From | Message |
sandman
Dodge Dakota
JOIN HERE
1/10/2003
23:31:06
|
 Subject: Milky Oil in Fill Neck ????
IP: Logged
Message:
Does anyone know how it is makeing it's way into the fill neck? If it was just a moisture issue we would see condensation in the baffel area. The milk apperance tells us that the moisture is getting whipped up into the oil. Could it be the airator's that mist the oil comeing into the head for the upper valvetrain coponets???? It just strikes me as odd seeing how you never see any milky oil on the dipstick, in the oil that comes out of the crank case or filter. As far as I know no one that has done the HO cam conversion has noted any foamy or milky oil in the top end either. Does anyone have any ideas on how this milky oil is being produced.
|
Channon
Dodge Dakota
JOIN HERE
1/11/2003
14:01:42
|  RE: Milky Oil in Fill Neck ????
IP: Logged
Message:
I've heard that is a sign of a blown head gasket. Not sure what engine you have but you might try a compression check?
later
Channon
99 SY RC R/T
|
j
GenIII
1/11/2003
15:24:47
|  RE: Milky Oil in Fill Neck ????
IP: Logged
Message:
But if the head gasket was blown, wouldn't the oil on the dipstick and in the crankcase also look milky?
2000 4.7 CC auto, clear corners, Magnaflow catback, Kenne Bell s/c.
|
Channon
Dodge Dakota
JOIN HERE
1/11/2003
17:59:16
| RE: Milky Oil in Fill Neck ????
IP: Logged
Message:
No not necessarily. Here is what another guy went through when he found that same thing under his oil filler cap.
"OK, curiosity got to me...had to go check. I think you are right my friend. Whitish brown crap under the oil fill cap and breather. Got a blown head gasket. Or, could I have just blown a valve seal? The oil on the dipstick from the oilpan looks normal. Normal temps driving home. If that goop is only up in the drivers valve cover what could that mean....since the oil on the dipstick looks normal."
I would suggest draining your oil and looking very closely at it to see if you see a greenish hue to it. I may be wrong (wouldn't be the first time), but if I'm right you don't want to be running that engine until its fixed.
later
Channon
99 SY RC R/T
|
Channon
Dodge Dakota
JOIN HERE
1/11/2003
18:13:59
| RE: Milky Oil in Fill Neck ????
IP: Logged
Message:
From the expert(DBLDOOR), "the pressurized leak from the cylinder through the head gasket is causing the foaming mixture of oil and water creating the brown goop."
Problems include (and are probably already likely)
1) water getting into your bearings and causing oxidation
2) gasket material getting into oil passeges and cutting oil supply to important components
3) shrapnel from the fire ring (metal around cyl hole in gasket) getting into oil bearings
4) lifters getting cloged by the gasket material (almost always happens, rebuild lifters is not too dificult)
Channon
99 SY RC R/T
|
sandman
Dodge Dakota
JOIN HERE
1/12/2003
00:19:26
|  RE: Milky Oil in Fill Neck ????
IP: Logged
Message:
Guys I am talking about the classic 4.7 milky oil in the oil fill baffel area. All of them do it. It is not a bloan head gasket or my coolant system would be pressurized with exhaust gas, my coolant level woulkd drop, and their would be signs of this in the oil. This is common to all 4.7's and I am trying to figure out the source to devise a true fix. DC just installs a baffle to hide it from customers eye.
|
Art
Dodge Dakota
JOIN HERE
1/12/2003
00:40:01
| RE: Milky Oil in Fill Neck ????
IP: Logged
Message:
The source is the filler neck itself,short trips and cold weather builup condensation in the filler neck,its a water vapour and oil emulsification,aluminum heads,magnesium valve cover and composite filler neck all disipate heat and condense at different rates,causing condensation.If you drive short distances in cold weather it gets even worse,I wraped mine with insulation and its a little better but I still clean it out evey couple weeks in the winter,in the summer it never does this.Best fix would be a oil filler in the valve cover and blocking off the filler neck.
|
AmsoilSponsor
DakotaEnthusiast
1/12/2003
11:13:28
| RE: Milky Oil in Fill Neck ????
IP: Logged
Message:
Sandman,
I'm pretty sure there's a TSB on this involving a new cover & baffle. I don't have a link so you might want to call your local dealer. You might be correct in stating:
" DC just installs a baffle to hide it from customers eye. "
I would go on record as it being only condensation. The fill neck is elevated off the valve cover and is generally the "high" point in the oil system. The heated condensation in the engine rises to the high point, which tends to run cooler since it is elevated over the valve cover, has airflow over it, and is not generating any heat. Thats where it ends up as the milky white fluid.
Hope this helps.
-----
Steven Roark , Amsoil Dealer , Proud Sponsor of www.DodgeDakotas.com
AMSOIL Synthetic Motor Oils, Lubricants, Filtration, and Truck Care Products
|
John Milner
Dodge Dakota
JOIN HERE
1/12/2003
13:20:29
|  RE: Milky Oil in Fill Neck ????
IP: Logged
Message:
Hey Guys,
If you've been wrenching as long as I have (40+ years), alittle "milk" in the filler neck means condensation! Don't make a big deal about it. DC put that baffle there for all the idgets that ain't got a clue as to what happens inside an engine and where the the atmospheric water vapor forms.
As soon as shut down, atmospheric water vapor rises to the highest point, condenses, and is incapsilated in the oil on the surface of the filler neck, which is cool. All they have to do is make it steel, like the old days, it would be hotter, and the water would steam out and release from the oil film inside the tube...."boiling off" so to speak.
How many of you have actually had any seriuos engine problems directly related to this condition? My gues would be zippo. Just my opinion.
|
John Milner
Dodge Dakota
JOIN HERE
1/12/2003
13:23:35
| RE: Milky Oil in Fill Neck ????
IP: Logged
Message:
Hey Guys,
If you've been wrenching as long as I have (40+ years), alittle "milk" in the filler neck means condensation! Don't make a big deal about it. DC put that baffle there for all the idgets that ain't got a clue as to what happens inside an engine and where the the atmospheric water vapor forms.
As soon as shut down, atmospheric water vapor rises to the highest point, condenses, and is incapsilated in the oil on the surface of the filler neck, which is cool. All they have to do is make it steel, like the old days, it would be hotter, and the water would steam out and release from the oil film inside the tube...."boiling off" so to speak.
How many of you have actually had any seriuos engine problems directly related to this condition? My gues would be zippo. Just my opinion.
|
Art
Dodge Dakota
JOIN HERE
1/12/2003
15:32:12
| RE: Milky Oil in Fill Neck ????
IP: Logged
Message:
Yes it is normal for a little emulsion to form BUT,I`ve only seen this on the 4.7 to this extent,the problem is when you get the filler all pluged below the "baffle fix" then you have a non functioning PCV valve and that is the real problem.
|
Texas Todd
Dodge Dakota
JOIN HERE
1/13/2003
09:53:43
| RE: Milky Oil in Fill Neck ????
IP: Logged
Message:
With my 4.7, Mobil 1, 180 t-stat, this has not been a prob., I live in a warm climate though.
Why don't they put a vent it the filler cap?, so it would vent the moisture out? Must be a reason why this would not be a good idea.
|
| | P 1 |
|
Post a reply to this message:
Username Registration: Optional
All visitors are allowed to post messages
|
