Milkshake instead of oil - What pressure test kit should I buy?

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flagstaff

flagstaff

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Location
Flagstaff Arizona
This is for a 2011 LX570 with 168k miles.

A few days ago when doing an oil change, I noticed the dreaded 'milkshake' look to the oil under the fill cap. I checked the coolant level and it was low but not alarmingly low. Topped everything off and all seems good but now I want to do a coolant pressure test to confirm if I have a leak from the coolant system into the oil. (This is where I ask if this most likely is a head gasket leak.) The local auto parts stores with the loan-a-tool program do not have a pressure tester that fits the radiator of my 2011 LX570.
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Knowing I have water in my oil, what are the likely causes? Head gasket leak is one. Are there other causes and what tests can help determine the cause?

If a coolant system pressure test is a good idea, can someone point me to an inexpensive test kit that fits the 2011 LX570. Perhaps something on Amazon.

Thanks everyone,
Flagstaff
 
Check your PVC valve !!
Had the same symptoms in my Tundra and everything went away after the replacement.
Milk shake means moisture near the cap but not necessarily coolant.
 
@paulunm Thanks. I have heard that as well. The odd thing is that I just came back from a trip from Flagstaff to San Diego and back. I was thinking that the recent long trip would have removed the moisture out of the inside of the engine. That's why I wanted to to the coolant system pressure test. Thanks for suggesting it.

@clrussell, The oil that came out was as expected. Dark (it was time to change the oil) but clear with no sign of oil with water. No milkshake.

Still watching and haven't driven it too much. I'm also monitoring the coolant consumption. That should also be a n indicator.

Thanks much gents.

Anyone know of a pressure test kit that fits the LX570 radiator?
 
flagstaff said:
This is for a 2011 LX570 with 168k miles.

A few days ago when doing an oil change, I noticed the dreaded 'milkshake' look to the oil under the fill cap. I checked the coolant level and it was low but not alarmingly low. Topped everything off and all seems good but now I want to do a coolant pressure test to confirm if I have a leak from the coolant system into the oil. (This is where I ask if this most likely is a head gasket leak.) The local auto parts stores with the loan-a-tool program do not have a pressure tester that fits the radiator of my 2011 LX570.
View attachment 2938159

Knowing I have water in my oil, what are the likely causes? Head gasket leak is one. Are there other causes and what tests can help determine the cause?

If a coolant system pressure test is a good idea, can someone point me to an inexpensive test kit that fits the 2011 LX570. Perhaps something on Amazon.

Thanks everyone,
Flagstaff
Click to expand...

I agree with @99toylc , change your PCV (Positive Crankcase Ventilation) valve. Cheap and easy. With no milkshake in your drained oil, this points pretty conclusively to the PCV valve.

HTH
 
flagstaff said:
@paulunm Thanks. I have heard that as well. The odd thing is that I just came back from a trip from Flagstaff to San Diego and back. I was thinking that the recent long trip would have removed the moisture out of the inside of the engine. That's why I wanted to to the coolant system pressure test. Thanks for suggesting it.

@clrussell, The oil that came out was as expected. Dark (it was time to change the oil) but clear with no sign of oil with water. No milkshake.

Still watching and haven't driven it too much. I'm also monitoring the coolant consumption. That should also be a n indicator.

Thanks much gents.

Anyone know of a pressure test kit that fits the LX570 radiator?
Click to expand...

I wouldn’t bother with a pressure test kit. Change the PCV valve, clean off the cap, and it’ll be fine. There are pics and part number in this thread.

forum.ih8mud.com

Replace that PCV valve

With 10 years and 95K on my LX decided car is a keeper, it is time to catch up on what I neglected over the years. From rust cleaning on frame welds, POR15, Boeshield T9 and fluid film inside the frame, all fluids, complete brake job with new OEM calipers painted red (for the extra 10mph in top...
forum.ih8mud.com forum.ih8mud.com
 
If you want an abundance of confirmation run the oil 5k and send off a sample for used oil analysis. If anything is going on with the cooking system at all it will come back very clearly in the results.
 
You were right gents. Just got the PCV Valve and replaced it. The old one was completely blocked.
Thanks again for the great advice.

It seems fitting that when I wrote this, the most recent post was "Replace your PCV valve" by @airdzi.
I should read the forum more frequently.

Flagstaff
 
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