Oil overfill

bijou22

Petty Officer 1st Class
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Jul 3, 2005
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302
Looking at my boat today, took the oil cap off and there was some foam in there through overfilling. I have drained the oil and changed the filter and now filled to the correct level. Will it be OK now or have I done serious damage:(<br />Boat has only run for 1 hr since overfilling was done?
 

Mischief Managed

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Dec 6, 2005
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1,928
Re: Oil overfill

Damage would only be done if you lost oil pressure and kept running the engine, not solely from overfilling. Did you lose pressure? If not, no damage. If you did lose pressure, I hope you shut it down immediately.
 

bijou22

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Re: Oil overfill

No, I have not lost oil pressure. Will the foaming dissapear after time as there is still a trace of it under cap, and gives a slightly cloudy dipstick.
 

DukesFin

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Oct 12, 2005
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Re: Oil overfill

Just a "lamen" here, but "cloudy" dipstick and "foam" on the cap says water in the oil to me. Again, I'm no expert, but I would think it would be nearly impossible to get oil foamy or cloudy without adding water to it.<br /><br />I do know from experience, that if there is water in the oil, it might not lower your oil pressure. In fact, as water heats and expands, it might actually raise the pressure.<br /><br />I'm interested in what the experts have to say.<br /><br />From a person that just got done replacing an engine after seeing "foamy" oil running all over the engine, I'd hold off on running it until you get some more feedback on this!<br /><br />Good luck!
 

Mischief Managed

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Re: Oil overfill

I gotta agree with DukesFin. I thought you were talking about foamy oil from the crank whipping it into a froth, not white foam. White cloudy foam is indeed from water. Hopefully it's just condensation.
 

bijou22

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Re: Oil overfill

If it is water, what are the implications of this, worse case scenario?<br />I belive that water contamination has entered the oil due to me attempting to drain off some of the oil through a previous fill. Just to sum this up:<br />1. I changed the oil and filter<br />2. Checked oil but I had overfilled<br />3. Used oil extractor on another job which was a mixture of oil and water<br />4. Attempted to remove some of the oil using the above and then noticed foam and cloudy<br />5. Today did a complete drain, and replaced filter also but I still have some contamination in there.<br />Please help me, I have done what was suggested on a previous post entitled OIL CONTAMINATION???
 

tashasdaddy

Honorary Moderator Emeritus
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Nov 11, 2005
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51,019
Re: Oil overfill

when water is leaking into the oil it may show that the oils is over filled. as the water is mixing with the oil and increasing the volume, thus showing higher on the dipstick.
 

DukesFin

Chief Petty Officer
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Oct 12, 2005
Messages
500
Re: Oil overfill

You're saying that you pulled the excess oil out with an extractor that had been used with a mixture of oil and water and you are thinking you got enough water this way to show foam?<br /><br />Hmmmm....<br /><br />Water (if it is in the engine and has not emulsified) will be on the bottom of the pan. If you can drain the oil/water from the plug, that will let you know if you do have water in there, (again, if the motor has not been run with the water in it causing it to emulsify (mix with the oil). <br /><br />I'd be a bit concerned with it still showing foam though.<br /><br />Do you think you can get a picture posted of what you're seeing on your dipstick?<br /><br />Just as a suggestion, (and I did this), next time (hopefully never), just get a new extractor. I ALMOST used my old one with emulsified oil in it, but thought I'd better just spring for a new one having just put new power in. I'm sure that what was suggested was not using an extractor that had been previously used to pull a mixture of oil and water!<br /><br />Again, good luck and post a picture of the contamination you are seeing now. I'm not a mechanic, but I do know emulsified oil when I see it! It would help the professionals in here better direct you on what to do next if they can tell how bad/not bad the problem you're seeing is.
 

TilliamWe

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Dec 21, 2004
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Re: Oil overfill

I'm gonna say: the reason it was "overfilled" was because water is getting into the cranckcase. Yeah, your extractor may have helped contamintate it, but not that much, in my opinion. Now that you have drained the oil, refilled to proper level, you need to run the engine. Watch for foaming oil, and see if the oil level gets too high again. If it is too high, viola, you have water intrusion. And that means bad exhaust manifolds. You will need to remedy this situation quickly, as shiny machined steel & iron do not like water.
 

bijou22

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Jul 3, 2005
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Re: Oil overfill

Thanks guys, I'm gonna run her today for about 30 mins and check the level on the dipstick and for the prescence of foam. Will let you know.
 

jch7450

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Apr 13, 2003
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Re: Oil overfill

Wish we could see a picture of what the foam looked like
 

KaGee

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Aug 14, 2004
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Re: Oil overfill

A thirty minute hard run will get the engine hot enough to burn off any leftover condensation in the motor. If you still have signs of water in the oil afterwards you need further investigation.<br /><br />Read this: WATER INTRUSION
 

bijou22

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Jul 3, 2005
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Re: Oil overfill

I run the boat today for 30mins on the mooring then the weather improved so I took her out for a good 30mins burn around the bay also. Left engine to cool and dipstick is a lot clearer than before. Removed the oil filler cap and it still has some white type foam (pic to follow) in there but not much. The stuff in there looks like what I had in the oil extractor though.<br />Oil level has remained the same, wouldn't it increase if water was getting in?<br />With regard to the engine coolant freezing, during winter I completely drained system as per volvo manual.
 

KaGee

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Aug 14, 2004
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Re: Oil overfill

As long as the oil level remains constant, that means you are not getting anything significant in the crankcase. Just wipe the cap off and keep an eye on it. <br /><br />There is always going to be brief periods where you get condensation build up inside the engine.
 

bijou22

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Jul 3, 2005
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Re: Oil overfill

Can anyone tell me how to go about inserting pictures into a message?
 

Fishermark

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Oct 19, 2003
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Re: Oil overfill

Your pictures need to be uploaded to another site that hosts pictures. There are some free ones out there. Once they are uploaded to the web, then you can use the Image" button on the full reply form to find and add the image. Easy! :D
 

mcleaves

Chief Petty Officer
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Sep 15, 2003
Messages
521
Re: Oil overfill

That looks like water to me..<br /><br />-Mike
 
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