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milky crap on dipstick

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Old 02-09-2011, 10:26 PM
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Default milky crap on dipstick

well i checked my oil today and i had a milky crap on the bottom of it today,my oil level is fine,and it runs fine,i cant see a crack on my head but some how theres water in my oil,and i dont know how it got there.....any suggestions?
Old 02-09-2011, 10:44 PM
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bad head gasket?
Old 02-09-2011, 10:46 PM
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if had a bad head gasket...wouldnt it run bad?
Old 02-09-2011, 10:58 PM
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Not right away. Do a compression test and see what you get for readings.
Old 02-09-2011, 11:02 PM
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whats the readings i should get?
Old 02-10-2011, 06:29 AM
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Compression spec for the 4.0 is 120-150 psi, with no more than a 30 psi variation between cylinders.

Has this engine ever been OVERHEATED? Overheats can lead to head and head gasket problems.

But you could also have a buildup of condensation in the crankcase because of short trips and not frequent enough oil change intervals.

How old is this oil and is this XJ used primarily for short trips? Longer trips can burn off any existing condensation.
Old 02-10-2011, 07:32 AM
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Originally Posted by tjwalker
But you could also have a buildup of condensation in the crankcase because of short trips and not frequent enough oil change intervals.

How old is this oil and is this XJ used primarily for short trips? Longer trips can burn off any existing condensation.

Seen this plenty of times. If you arent loosing any coolant and its running fine this is probably your cause.
Old 02-10-2011, 07:46 AM
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Originally Posted by Rmart30
Seen this plenty of times. If you arent loosing any coolant and its running fine this is probably your cause.
x2
Old 02-10-2011, 07:59 AM
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Originally Posted by Bustedknuckle
Not right away. Do a compression test and see what you get for readings.
+1. A compression test is the best way to know for sure. No sense in second-guessing the cause when you can easily determine it via process of elimination.
Old 02-10-2011, 09:39 AM
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x2... get it to someone who can do the test. It might cost you some labor but.... at leat you can drive it there. Don't delay this before you find it not driveable.
Old 02-10-2011, 09:41 AM
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I had the same scare, ended up being condensation.
Old 02-10-2011, 09:46 AM
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Originally Posted by ken72
x2... get it to someone who can do the test. It might cost you some labor but.... at leat you can drive it there. Don't delay this before you find it not driveable.

Change the oil BEFORE you drive it anywhere!!!
Old 02-10-2011, 10:04 AM
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sorry to hijack the thread but maybe the answer to my question can help the op

can a bad rms let water or condensation in the oil pan. i also have milky crap on the end of my oil stick, and i seems to get worse as the rms leaks more oil
Old 02-10-2011, 10:09 AM
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Originally Posted by tjwalker
But you could also have a buildup of condensation in the crankcase because of short trips and not frequent enough oil change intervals.

How old is this oil and is this XJ used primarily for short trips? Longer trips can burn off any existing condensation.
^^ This. Happens a lot especially in the winter time. Not too much of a concern unless you are loosing coolant as well.
Old 02-10-2011, 10:22 AM
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for my blown head gasket I had really white smoke that smelled like anti freeze coming out of the tail pipe


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