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?

 

bad head gasket?

 

if had a bad head gasket...wouldnt it run bad?

 

Not right away. Do a compression test and see what you get for readings.

 

whats the readings i should get?

 

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.

 

Seen this plenty of times. If you arent loosing any coolant and its running fine this is probably your cause.

 

x2

 

+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.

 

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.

 

I had the same scare, ended up being condensation.

 

Change the oil BEFORE you drive it anywhere!!!

 

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

 

^^ This. Happens a lot especially in the winter time. Not too much of a concern unless you are loosing coolant as well.

 

for my blown head gasket I had really white smoke that smelled like anti freeze coming out of the tail pipe