Yellow gunk on Oil fill cap

[lawmaninsc]

Change your PCV valve. I had a Ford F-150 one time that looked like that. I changed the PCV valve-it cleared up.
Worth a try.

 

[Volvohead]

I agree. Don't panic. Unless your coolant bottle is dropping, it looks more like short commute disease. It gets worse in colder, damper weather.

From what little else I can see in those pix, it might be ARX time anyway.

 

[daman]

Do a UOA,,i still think there's somthing going on there that's not good,
that's alot of milk for just.... "condensation".

 

[Dark Jedi]

Quote:

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Do a UOA,,i still think there's somthing going on there that's not good,
that's alot of milk for just.... "condensation".

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seen pics of the older 4.7 dakota oil caps before they put a plastic bottom on the oil cap. it was thicker than what HH posted. one thing you cna try is. to drive the car and if after its really warmed up after a few hours of driving. if its gone then its condensation build up. some dakota owners insulates their oil filler neck and the hose comming from the PCV.

my dakota still does this when its cold but if I drive it awhile it goes away. all I can say is to just wipe it all out.

but if your coolaint level isnt low and your oil on your dip stick looks good. then you dont have a coolant leak.

 

[den]

Ihave a88 caprice 4.3 V6 air pump,Ihave seen this on my dip stick in the winter time?Dip stick is rusting.Wouldnt this show up when i changed the oil today?107,000 miles.Short trips and milage.Summer it seems to go away?

 

[LargeCarManX2]

My Mopars do this every year in the Winter. Condensation is most likely.

 

[Trav]

Looks like condensation,very common in cold areas.Just to be on the safe side have the cooling system pressure tested.

 

[KBFXDLI]