2018 Wrangler JL Coolant issue

[Jerseydevil65]

I noticed the other day that my engine fan sounded very loud as I was driving. I also noticed that the temp gauge shot up to the top twice and shot back down to normal a few times when driving. I checked under the hood and noticed I was completely out of coolant. I filled it with 50/50 and today I took a short drive and everything seemed fine however, when I checked the coolant level when I got back home, it was completely empty again. I did not see any leaks or find any coolant on the ground. Any explanation?

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[ScotM]

Do you check by the water pump and under the coolant tank? There is a big problem somewhere.

 

[Jerseydevil65]

Have not checked, will do that today. Just surprising that all the coolant is gone and not on the ground.

 

[hamiamham69]

Check your oil and pray the coolant is not in there .zz

 

[58Willys]

Could be a blown head gasket, symptoms are typical of that.

 

[alphawolff]

Have not checked, will do that today. Just surprising that all the coolant is gone and not on the ground.

3.6l? 55-80k miles? blown headgakset

 

[_olllllllo_]

I would check your oil to see if it looks like a milkshake, which definitely indicates coolant in the oil system.

You can go to O'Reilly's or AutoZone and rent a cooling system pressure test. This could help hear where a leak is coming from. Heater core is a possibility and you would notice it with a sweet smell from the coolant.

 

[ForgottenTaco]

I changed my oil a couple weeks ago. Didn’t see anything unusual with the oil but decided to check the coolant anyways. The stick was bone dry. I ended up adding about a quart before it finally registered on the stick. I drove it around and checked it again the next day. Had to add about another half quart. Drove it around again and checked the following day and it was normal.

2.0 turbo 4 banger

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