Milky Oil

[mdltn]

2015 Z3
Raptor 400 Engine

I went to change the oil today and found that the oil is very milky. Definitely water in the oil. Any suggestions on where to IMG_3840.jpg
begin with troubleshooting?


Sent from my iPhone using Tapatalk

[freeheel4life]

Ouch. On a Raptor I'd say your oil cooler is cracked. I'd be looking at your trans fluid as well and see if its pink milkshake(oil and trans cooler are both with water cooled). It doesn't say where you are from on you profile.

Where was the boat kept this winter and how was it winterized??

There's a very small chance it could be a head/gasket issue....but I've only seen coolant make it into the cylinders and start blowing out the exhaust, never made it into the oil.

[mdltn]

I live in Nebraska.
I had room in my shop at work this winter so I didn’t winterize it. The shop is heated and we work there every day so I don’t think it froze.

The picture was of the oil that first came out of the engine and the oil filter was full of the same oil. So it would seem like to me the issue started at some point last summer since the water is mixed through the entire system.

Last summer I did get a 4239 error code. I changed one of the O2 sensors and the error code cleared. Not sure if the two are related, if the O2 sensor would’ve failed because of water?


Sent from my iPhone using Tapatalk

[freeheel4life]

Well I've seen this issue 2 or 3 times now and its always been the oil cooler from some freeze damage. Trans coolers goes as well and sometimes the coolant heat exchanger get damaged as well.

Whats the coolant level like in the overflow/degas bottle??

02 sensors is a fairly common issue and shouldn't be related.

[mdltn]

The coolant overflow bottle is empty.


Sent from my iPhone using Tapatalk

[freeheel4life]

Change the oil(might have to flush it a few times). Top off coolant with PROPOLYENE glycol. See if you are going thru coolant.

Have you pulled the red dipstick at trans and inspected the condit I on of the ATF??

[chpthril]

Send an oil sample off to see if it contains glycol. This may point to an internal failure or some point thats cooled with lake water, if there is a point. Im not intimate with that engine.

[mdltn]

The transmission fluid looks good.


Sent from my iPhone using Tapatalk

[NICKYPOO]

Do you run it in saltwater?

[mdltn]

No saltwater.
I got the oil flushed out and replaced and topped off the coolant. I’m going to run it on a garden hose for awhile and monitor the oil.


Sent from my iPhone using Tapatalk

[mdltn]

I ran the boat on the garden hose for 45 mins. No change in color to the oil. I hope to get it on the lake next weekend and run it hard. Or does anyone think that’s a bad idea?


Sent from my iPhone using Tapatalk

[KoolAid]

How does the K&N filter look? is it still pink/red or is it a white color? if white, it came in through the intake.

[freeheel4life]

I ran the boat on the garden hose for 45 mins. No change in color to the oil. I hope to get it on the lake next weekend and run it hard. Or does anyone think that’s a bad idea?


Sent from my iPhone using Tapatalk

I wouldn't start by running it hard out the gate. Would run it with no ballast and check oil after running. Then put 1/4 to 1/2 ballast in and run some more and check oil. If it doesn't milk up then ballast up start surfing and still check oil.. Thats just my opinion tho.

[mdltn]

The K&N filter does look to be pretty much all white


Sent from my iPhone using Tapatalk

[boatwakes]

Thats normal color for the air filter and not considered white.