creamy oil on oil cap

[Hollandaze]

i removed the engine oil cap and noticed a creamy (water-oil) residue on the cap. Is there potential problem here? temp of engine never exceeds 140f. changed oil a couple of weeks ago, no noticeable water in oil. 1998 omc 4.3 liter GM. i would appreciate any suggestions.

 

[Dhadley]

Re: creamy oil on oil cap

Sounds like condensation. What kind of running do you do? Extended idle, normal cruise ect? Sounds like it may be running a touch cold. What t-stat? What oil?<br /><br />Good luck!

 

[Hollandaze]

Re: creamy oil on oil cap

i am running sae30.<br />alot of trolling-fishing.<br />i try and open it up when the conditions on lake mich allow. the temp gage normally reads between 130 and 140 after a half hour or so.

 

[Greg O'Malley]

Re: creamy oil on oil cap

There is definitely water in the oil and its sounds like a leak. Is it an I/O? Boat manufacture? I have a Regal with 4.3s. The flapper valve was installed incorrectly (backwards) and as result the long block has to be rebuilt.

 

[wesal1]

Re: creamy oil on oil cap

When you change the oil a few week ago had the boat been ran any or where you changing the oil from the winter?

 

[wesal1]

Re: creamy oil on oil cap

Also what does the oil look like on the stick. If this oil looks fine then you most likly do not have a problem. But to make sure change the oil one more time and pay real close attention to it. After doing this whip the oil cap off and run in the yard for a hour or so. That should tell you if you ahve a real problem

 

[Hollandaze]

Re: creamy oil on oil cap

wesal1<br />i believe it is just condensation from the winter. i ran it all weekend and the cap is fine now. the oil at the dipstick looks clean and without water. i will change the oil though one more time just to be sure.<br />thanks for your input.<br />Hollandaze

 

[Torpedo]

Re: creamy oil on oil cap

Make sure your exhaust manifolds / risers are OK. If you see this problem again thats my guess...

 

[corm]

Re: creamy oil on oil cap

If you have ever went swimming in Lake Michigan you would be frothy white too.<br />

corm