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Unread 09-16-2013, 09:46 AM   #1
pakman325
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2008 KK Liberty 
 
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Coolant Question/Preventative Issue

So I have been doing some basic work on my KK the last couple weeks and have notice that my coolant reservoir is low. Engine temps are normal and there are no indicator lights suggesting a problem, but I would like to know how normal this is.

Do coolant reservoirs need to be refilled on occasion? Should I assume that there is a leak?

Under the car recently, I have noticed condensation from the A/C, but it is usually pretty small and I haven't thought much of that.

Any idea how concerned I should be or what I can do about this?

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Unread 09-16-2013, 12:09 PM   #2
LKWJEEPER
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How low are you talking about? Have you had the fluids flushed and it wasn't ever brought up to the correct level? If you had an issue you would notice the fluid level decreasing fairly quickly.

I had a 2001 Impala with a cracked head gasket. I noticed I was having to fill up coolant every other month.
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Unread 09-16-2013, 12:15 PM   #3
pakman325
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This vehicle was new to me at 113k miles. Now 3,000 later, I noticed it. Never knew the tank to be especially full though. Everything ran at-temp and smoothly (and continues to do so), but I just want to make sure this isn't something that will become an issue in the future, and if it might, how I can rectify it.

The level is down to the very lowest scallop in the reservoir. It appears to be steady from that point though.
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Unread 09-16-2013, 03:51 PM   #4
lfhoward
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I would fill it up to halway between the Max and Min lines, using HOAT coolant (as the owners manual states), and keep an eye on it. I think coolant slowly evaporates out of the coolant bottle (over the years), as the lid is not exactly airtight. I had to fill mine up a bit after I bought it, but haven't had trouble since. If you really do have an engine problem, you'll be filling it every month or sooner. I had an XJ with a cracked head and that's what happened. I don't expect you'll have a problem like that. You could always try replacing your radiator cap, too, and see if the loss stops.
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Unread 09-16-2013, 03:52 PM   #5
lfhoward
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Keep in mind too that coolant expands when hot and contacts when cold. So the level will be different in your coolant bottle depending on whether the engine is warmed up.
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Unread 09-17-2013, 07:11 AM   #6
pakman325
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Quote:
Originally Posted by lfhoward View Post
I would fill it up to halway between the Max and Min lines, using HOAT coolant (as the owners manual states), and keep an eye on it. I think coolant slowly evaporates out of the coolant bottle (over the years), as the lid is not exactly airtight. I had to fill mine up a bit after I bought it, but haven't had trouble since. If you really do have an engine problem, you'll be filling it every month or sooner. I had an XJ with a cracked head and that's what happened. I don't expect you'll have a problem like that. You could always try replacing your radiator cap, too, and see if the loss stops.
Thanks for the advice. I don't think of it as a problem... yet. And I'm not sure that I could even definitively call it a loss of coolant as I haven't seen it decrease (and certainly not to any measurable degree).

I'll probably look into filling that this weekend.
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Unread 09-17-2013, 07:14 AM   #7
LKWJEEPER
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You would know it if you had a coolant leak.. maybe you wouldn't see the drip, but if you had an issue. I'm fairly certain you would know about it.
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Unread 09-17-2013, 12:48 PM   #8
pakman325
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Quote:
Originally Posted by LKWJEEPER View Post
You would know it if you had a coolant leak.. maybe you wouldn't see the drip, but if you had an issue. I'm fairly certain you would know about it.
That's the way I thought about it, but I am one of those people who doesn't let small issues like that go easily. I'll have an aneurysm one day.
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Unread 09-17-2013, 01:34 PM   #9
tommudd
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But yet you say

"I'll probably look into filling that this weekend."

so you're not really too concerned . No matter if I thought if it was leaking or not I'd be filling it to the required level today
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Unread 09-17-2013, 08:21 PM   #10
Ted15
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Mine was low a while ago as well. I since received a letter from mopar for a recall on water pumps with a W on it. I don't know if you'd be covered but it's worth looking into.
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Unread 09-21-2013, 08:40 PM   #11
pakman325
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Quote:
Originally Posted by tommudd View Post
But yet you say

"I'll probably look into filling that this weekend."

so you're not really too concerned . No matter if I thought if it was leaking or not I'd be filling it to the required level today
You would have to understand the context of my life right now. Prep football coach (in season) and school teacher. I don't get home until well after 8 at night so there is no service department I could even buy the HOAT fluid from even open during my available hours.

Anyway, I topped off today, got about 150 miles in without seeing a single drop puddle up below the vehicle or anything spraying inside that might indicate a bad hose.

Tonight's cold sit will be a test, but it would seem that it was just due to long term evaporation and negligence by the previous owner.

Thanks for the advice guys!

Now to look into hitch receivers and new tires...
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