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Old 06-30-2013, 03:00 PM   #1
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Coolant level not stable

When I purchased my 2013 Rubicon back in March, my coolant level was at the max mark on the coolant recovery bottle when hot, engine running at idle. I know have about 3000 miles on it and have had to add coolant twice to keep it on the max level. I do not see any apparent leaks and the temperature gauge always runs in the middle.
Has anybody else had to add coolant on occasion, or does it always stay in the same place in the coolant recovery bottle?

My question is, do you ever have to add some make up additional coolant to your recovery bottle?

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Old 06-30-2013, 03:05 PM   #2
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Have you checked it cold and hot?

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Old 06-30-2013, 03:13 PM   #3
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Originally Posted by Blue Heron View Post
Have you checked it cold and hot?
I normally check it hot engine at idle as the owners manual suggests.
When I check it cold, the level is even somewhat lower as it should be, because of the radiator drawing coolant back into the radiator as it cools down.
I don't know if maybe it just takes several thousand miles to purge all of the air out of the system, or what. I have looked for leaks both hot engine and cold and everything is dry.
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Old 06-30-2013, 03:34 PM   #4
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The problem with your question is that many to most, possibly never check their coolant level overflow bottle. I asked the question in the past regarding checking your engine oil level and found out that many never check it.
When I was looking for a used JK, before I bought my new one, just about every overflow bottle that I seen was empty.
Now OD to your question, mine also need some added about every couple of months. The owners manual states check it every month so I do.
So is it normal to add some on occasion, I really don't know, but I don't think that it is a big issue. The issue is $46.00 for a gallon of OAT. So far I have just added some distilled water, but if it continues, well I will purchase a gallon of the OAT.

IS THERE ANYBODY ELSE WITH A WRANGLER, THAT NEVER HAS TO ADD ANY ADDITIONAL COOLANT?
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Old 06-30-2013, 04:10 PM   #5
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Anybody, HELLO...........you had better go check your coolant bottles, because chances are they are empty and Summer is here.....................
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Old 06-30-2013, 04:50 PM   #6
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I'm at 3000 miles and have had to put a decent amount of coolant in twice. But this is after wheeling or camping in the desert so i don't think it's a problem.
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Old 06-30-2013, 05:00 PM   #7
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I am at 8000 and coolant level is still ok
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Old 06-30-2013, 05:42 PM   #8
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For some reason, I've never had to add a drop of coolant. 33k miles. I DO have some clunking going thru the driveline and steering column, so I will visiting Mr. Jeep dealer in the AM. Gotta use the remaining 3 months on the warranty for something.
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Old 06-30-2013, 06:15 PM   #9
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You don't need to keep it at the "max" level hot. You only need to keep it approx. 2-3" above the "min" level cold. Depending on the temp, driving conditions, etc. it will fluctuate at any given time. If you maintain the proper range cold you won't have to worry about trying to keep it at a set mark. As I said the "cold", which is the "min" level is the important indicator. Between min and max is a wide range. I usually run normal hot approx. 2" below the max. line. When I run extreme hot, I'm usually at the max line. It will fluctuate.
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Old 06-30-2013, 07:19 PM   #10
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Thank you for all of your comments!
I am maybe trying to keep the level too high. We will see if it will settle in somewhere in between the marks!
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Old 06-30-2013, 07:57 PM   #11
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My coolant has been ±3-fingers OVER the max line since it rolled off the truck. Almost 2 years and 9300 miles later.... still exactly the same. No real noticeable change when it cools either.

It may have something to do with the COOL climate I live and drive in. For example, the high today was 75°F, clear and sunny - beautiful. But, we decided to go to the coast (12 miles by road) to cool off a little, and it was 62 there in mid afternoon!

You guys who live in those unbelievably hot climes may have coolant loss just because of the conditions you drive in, maybe...?

Early on, maybe first few thousand miles (just guessing) some Wranglers should experience an apparent coolant loss due to purging air from the system..... ? Maybe that's why mine was overfilled at the factory, to allow for air in the system..?

Good topic... haven't seen it discussed before. Lots to learn about what is "normal."



And, make mine a cold Pacifico, ifn i caint have a drop of good sippin' whiskey! Mexicans know how to make great beer - Americans, especially you guys from old Bourbon county, Kentuck know how to make the best whiskey! (IMHO)
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Old 06-30-2013, 08:41 PM   #12
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Since I bought mine in October of 2011 I haven't had to add any coolant, and it stays in about the same spot. I do know that when we bought my moms Tahoe, that it needed coolant every couple of months for the first 6,000 miles.
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Old 06-30-2013, 08:51 PM   #13
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....needed coolant every couple of months for the first 6,000 miles.

And then? No coolant since?
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Old 06-30-2013, 08:58 PM   #14
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Originally Posted by Up Hill Bill View Post

And then? No coolant since?
Yeah now it stays at the same level.
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Old 06-30-2013, 09:07 PM   #15
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Quote:
Originally Posted by nobndry View Post
Yeah now it stays at the same level.
Thanks!

So, Old Dogger may still be purging air at just 3000 miles...... maybe.





Or ,maybe it's the Budweiser clouding his vision....



EDIT: I meant Old Dogger's Jeep is "purging air"... not necessarily Old Dogger himself... But, Bud'll do that to ya'....

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