Loosing Coolant, no visible leaks...
I don't know where it goes but I don't worry about it.
07-28-2016, 12:46 PM
#17
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Year: 2000
Model: Cherokee(XJ)
Engine: Golen 4.6L
To expand on the thing with the oil, when a motor cools down, condensation forms on the metal surfaces inside the motor. Motor oils have a detergent package in them that is intended to bond to this moisture on startup to reduce the amount of damage it does until the motor is hot enough to boil it off.
Thirty years ago if you overwhelmed the detergent package with a coolant leak, the water would form a milky-looking emulsion in the oil. Now, however, the detergents have gotten so good that you can have a considerable amount of water or coolant in your oil before you can see any definite change in the oil's appearance, even though you're still doing damage.
The only sure way to rule out coolant in your oil is to send off a sample to a lab for analysis. I use Blackstone, but there are others. They charge $28 for the analysis and send you a sample kit for free. I do this at every oil change on my vehicles because the oil analysis tells you a lot of other neat things about what's happening in your motor.
The cam bearings will probably go first.
07-28-2016, 12:47 PM
#18
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Year: 2015, 2012
Model: Grand Cherokee (WK2)
Engine: 3.6L
That's understood, just a typo/typing habit from my old boxer in my sti.
To be clear, you're referring to the rod bearings yes? I'm tearing into this project this weekend and will report back to you guys asap, with pictures hopefully.
Appreciate the input though, I wasn't aware coolant wasn't visible in modern oil unless it's a bad leak, must've only dealt with bad leaks in the past!
To be clear, you're referring to the rod bearings yes? I'm tearing into this project this weekend and will report back to you guys asap, with pictures hopefully.
Appreciate the input though, I wasn't aware coolant wasn't visible in modern oil unless it's a bad leak, must've only dealt with bad leaks in the past!
03-29-2023, 05:35 PM
#23
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Year: 1988
Model: Cherokee (XJ)
Engine: 4.0L
Halligan.evan hasn't been back since 2016. If you're having an issue, I suggest you start a new thread so we can assist you further.
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