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Old 03-31-2017, 11:30 AM
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2013 JK loses coolant - Here's why and a fix

I have a 2013 JK. My coolant was low more often than I thought it should be, and I discovered it was leaking around the cover of the expansion tank and also out the overflow tube of the expansion tank. I confirmed this by wrapping paper towels around these two locations and watching them. I drive a LOT of rocky, bumpy, toss-me-around type trails.

The problem was solved by changing the expansion tank cover then plugging and relocating the overflow tube.

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Old 03-31-2017, 12:02 PM   #2
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Interesting. Do you have links to what you used?

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Old 03-31-2017, 12:16 PM   #3
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Why plug the overflow tube?
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Old 03-31-2017, 12:21 PM   #4
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Quote:
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Why plug the overflow tube?
I think he is talking about the hole in the reservoir for the over flo tube as he looks like he added a new sealed over flow line.
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Old 04-02-2017, 11:51 PM   #5
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Quote:
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I have a 2013 JK. My coolant was low more often than I thought it should be, and I discovered it was leaking around the cover of the expansion tank and also out the overflow tube of the expansion tank. I confirmed this by wrapping paper towels around these two locations and watching them. I drive a LOT of rocky, bumpy, toss-me-around type trails.

The problem was solved by changing the expansion tank cover then plugging and relocating the overflow tube.
Link for parts you used?
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Old 04-03-2017, 11:06 AM
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A friend did this for me with stuff he had in his garage, so I do not have actual links for the parts. He plugged the expansion tank overflow (real name might be breather) with gunk used to seal around windshields. Drilled a hole in the top of the tank and installed a part I do not know the name of for a new breather. Put a piece of tubing running uphill so it would not overflow from sloshing. The expansion tank cap was replaced with a device plumbers use to plug pipes for leak testing under pressure. This is pictured. Available at Home Depot. Hope this helps.
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Old 04-03-2017, 02:35 PM   #7
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