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Discussion Starter · #1 ·
Just picked up a 2015 challenger hellcat with 44k miles on it. All stock car. Prior to purchasing dodge replaced the 6 speed. I’ve driven the car less than 300 miles and noticed a puddle in the garage and turns out to be a blown head gasket! Seems not many people have this issue yet but I am starting to see a few posts. Thoughts?
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Discussion Starter · #3 ·
Why do you think it’s a head gasket?

Looks like straight coolant on the ground, likely from something other than a head gasket unless you have other symptoms…
Loaded the car onto the trailer and took it to the dealership where I bought it. Also the temp was running hot (230-240) and fan running non-stop. They did compression test and fluid, came back head gasket. They were quick to point out I didn’t buy their warranty and that even though I put less than 300 miles on it, it’s my problem. Good thing I purchased my own warranty.
 

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So the dealer sells you the car, 300 miles later you have overheating and coolant leaking, you take it back to the sale dealer and they did all the diagnostics?

Sounds sketchy on their end but sorry about your luck. I wouldn't be letting them work on my car, maybe get a recommendation to a good shop and get a second opinion.
 

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Discussion Starter · #5 ·
So the dealer sells you the car, 300 miles later you have overheating and coolant leaking, you take it back to the sale dealer and they did all the diagnostics?

Sounds sketchy on their end but sorry about your luck. I wouldn't be letting them work on my car, maybe get a recommendation to a good shop and get a second opinion.
The dealer is straight trash. It’s a Dodge dealer and by far the worst I’ve ever done business with. I live 2 hours away so it’ll go to my local dodge dealer here. Luckily my own warranty will kick in and cover it. The selling dealer was quick to wash their hands and punt it off as excessive speed. Speed has nothing to do with it. They also told me the headlight was out because of the bouncing around when I trailered it home. Bunch of clowns at McGrath Fulton Dodge.
 

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The dealer is straight trash. It’s a Dodge dealer and by far the worst I’ve ever done business with. I live 2 hours away so it’ll go to my local dodge dealer here. Luckily my own warranty will kick in and cover it. The selling dealer was quick to wash their hands and punt it off as excessive speed. Speed has nothing to do with it. They also told me the headlight was out because of the bouncing around when I trailered it home. Bunch of clowns at McGrath Fulton Dodge.
That sucks man. Well, when you take it to your local shop, just tell them the symptoms and let them check it out.

Not saying the other dealer was lying but who knows at this point. That’s a lot of pretty clean looking coolant on the floor, like you have a hose leaking or something. Getting air inside the cooling system because of something like a leaking house would cause all your symptoms.
 

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Discussion Starter · #7 ·
That sucks man. Well, when you take it to your local shop, just tell them the symptoms and let them check it out.

Not saying the other dealer was lying but who knows at this point. That’s a lot of pretty clean looking coolant on the floor, like you have a hose leaking or something. Getting air inside the cooling system because of something like a leaking house would cause all your symptoms.
I’ll definitely let them diagnose it from scratch. Most telling sign is they tested the fluid though and it’s definitely a coolant/oil mix. Not looking good. Guess this is one way to keep miles down. Be good as new just in time for winter!
 

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2022 Charger Redeye
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Just picked up a 2015 challenger hellcat with 44k miles on it. All stock car. Prior to purchasing dodge replaced the 6 speed. I’ve driven the car less than 300 miles and noticed a puddle in the garage and turns out to be a blown head gasket! Seems not many people have this issue yet but I am starting to see a few posts. Thoughts? View attachment 602852
View attachment 602851
That’s too bad. 😕. Not the norm though. I had way over 100K on my 2015 without issue and didn’t hear of head gasket issues. Hope you get it resolved and get to enjoy a lot of happy miles on it.
 

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'23 Redeye Jailbreak
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Now, show us the results of the leakdown test you paid for before you bought someone's old high mile Hellcat...

...you didn't do that did ya?
 

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I honestly am still finding it hard to believe it’s a head gasket!

I understand the selling dealer told you they did a compression check and sniffed the coolant for combustion gases but unless they had some proof of doing it, I’m hoping the next dealer tells you it’s a water pumper or hose or thermostat!
 

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“Old high mile Hellcat”…. Did you miss the 44K mile part?
44k miles on a 15-16 Hellcat s both old and high (7-8 years old on a FI engine is a long time). One does not simply buy a blown V8 without getting it fully inspected, to include a leakdown test. More than likely, you don't know if that was 44k miles driving across the state of Iowa every week, or if it was a mix of driving with several hundred passes done at the drag strip. Hence why high mile 15-16 HCs are cheap, relatively speaking. They have the least amount of factory improvements and some known weaknesses. This is especially true if they started life as a lease vehicle, as those were often abused and were returned with a lot of miles on them.

This is why it is absolutely imperative that used HC buyers pay an independent specialist to fully evaluate the car prior to purchase. These are not Mustangs or Camaros. If you blow the motor, you're out a new Toyota in terms of engine repair costs. Spend $200-$300 and get it inspected to within an inch of its life. $300 today is a lot cheaper than $20 grand tomorrow.

They weren't Hellcats, but the blown V8s I've built for myself over the years were rebuilt between 30k and 50k miles. As soon as they started showing compression loss, off with the heads.
 

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2022 Charger Redeye
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Just picked up a 2015 challenger hellcat with 44k miles on it. All stock car. Prior to purchasing dodge replaced the 6 speed. I’ve driven the car less than 300 miles and noticed a puddle in the garage and turns out to be a blown head gasket! Seems not many people have this issue yet but I am starting to see a few posts. Thoughts? View attachment 602852
View attachment 602851
Not sure about Challengers but the early Charger Hellcat in 2015 had issues with upper radiator hose. The fix was a double clamp 🙄. I remember checking mine and it came from the factory with a double clamp 😉
 
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