Milky sludge in oil filler neck

[cjcustoms]

Hey guys! New to the forum, but long time jeep enthusiast. I have a 2003 Liberty Sport 4x4 with the 5-speed manual and only 56,000 miles. Absolutely love it and being in Northern Michigan it definitely gets it's trials through the seasons. Anyway, had a concern the other day because I opened the oil filler neck and there is a layer of milky white sludge coating it. The dipstick shows clean oil so I am thinking maybe it's a breathing problem because doesn't this usually denote moisture of some sort in the oil? This is a huge concern because I don't want to be rebuilding a motor any time soon! Maybe this has been covered already, but I haven't sifted through the 508 pages yet and need some help quickly. Anyone have any ideas?

 

[BigRich201]

milky sludge usually means coolant is leaking and mixing with the oil

 

[Ry' N Jen]

Condensation in the engine.
Do a search on the topic and you will see that you are not the only one with the goo!

 

[J-Thompson]

very common

 

[LibertyTC]

Oil Filler Cap GUNK

When I first bought KJ I had read about this condensation problem in forum.
So I went to KJ and removed the oil filler cap. The end of the oil filler cap was completely gummed/gunked with the white milky sludge.:doublepuke:
Since I had the history of this vehicle all to 33k miles to where I bought it, All of the previous owners oil changes were done with regular oil.
So I cleaned the end of the cap with Varsol, and immediately replaced the PCV valve, and switched to full synthetic Mobil1.
No more milky cap here...:smokin:

 

[Luke]

I never thought about it ... but I had this when I first bought the KJ. After switching to synthetic I have not seen it again. Coincidence?

 

[Dave]

I still get it occasionally but I use synthetic oil (which seems to keep it at a minimum) and don't do many short trips which seems to make it worse. I check it weekly and also pull the splash guard and if there is any in there I wipe it out and clean the splash guard and also check the pcv.

Dave

 

[BjBnet]

some mechanics put white grease on the cap oring because they had a hard time removing it :disgust:

 

[HoosierJeeper]

Never seen it here, I use Valvoline Dino oil.

 

[tommudd]

Seems to be some have it some don't
Me I have never had it on mine and have done a few oil changes where they were full
Nothing to worry about clean it out and forget it
just the cold air hitting the plastic oil filler neck

 

[Dave]

some mechanics put white grease on the cap oring because they had a hard time removing it :disgust:

http://www.denlorstools.com/home/dt...is_34000_oil_filler_cap_wrench_for_dodge.html




:smokin:



Dave

 

[twack]

for me its a winter thing only. i only get sludge when its super cold and i only do short drives, even then the sludge isnt to bad. now my girls vw cabrio is just a sludge factory in the winter. in both vehicles it all clears out in the spring

 

[Dave]

for me its a winter thing only. i only get sludge when its super cold and i only do short drives, even then the sludge isnt to bad. now my girls vw cabrio is just a sludge factory in the winter. in both vehicles it all clears out in the spring

Ditto on the bold part.

Dave

 

[LibertyTC]

http://www.denlorstools.com/home/dt...is_34000_oil_filler_cap_wrench_for_dodge.html
:smokin:
Dave

DO you have this oil filler cap wrench Dave? How did you even know of it?
Nice Find, they can be on tight sometimes for sure.
38654[/ATTACH]"]

You must be registered for see images attach

:smokin:

 

[Dave]

Saw one at the dealer once. It fits a lot of Mopar stuff with the plastic filler necks. Found it on line but never got around to getting one....haha

(when I do an oil change I wipe my oily finger around the threads and mine always seems to come off by hand)

Dave

 

[waywardtravel]

If it's really cold when that is happening and consistently, it might have something to do with the pcv valve freezing up as described in the tsb

 

[BjBnet]

Thanks Dave, found some on ebay! Not going to order one just for one vehicle. I can see why a dealership or mechanic would have one for changing oil all week...

 

[LibertyTC]

In Windsor Ontario at ToolsNThings they have them for $10.99
http://www.toolsnthings.ca/
Look at page 68 it is there. http://toolsnthings.ca/48-73.pdf
This flyer is my kind of shop, makes Princess auto look bad.

 

[desync0]

"We are one of the largest tool stores for over 20 years in Windsor, Ontario."

Really? I've lived here my whole life minus a 6 month stint in Toronto and I've never heard of them lol

 

[BjBnet]

don't be knockin Princess Auto, it's where I get my free coffee just about every morning lol