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21 Camaro ZL1
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1,505 Posts
Discussion Starter · #1 ·
What the hell is this? I wiped it off about 1000 miles ago with brake clean, and the exhaust was clean. Its either diff fluid from where the axles go into the diff coming out and slinging on the exhaust, or its axle boot grease? Looks too brown to be axle boot grease. And BOTH SIDES?? WTF DODGE. This is problem #48390543890543 with this effing car. I HATE THIS CAR. I WANT MY ZL1 back.

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· Have Guns Will Travel
2019 Challenger SRT Hellcat Redeye - 2015 Challenger Hellcat
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6,654 Posts
Nothing. Car is stone stock. 3k miles.
You have a warranty, take it to the dealership. Don't forget it's union made so.......
 

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2015 Charger SRT Hellcat
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4,082 Posts
Have you checked the rear diff fluid level? When my boots leaked, I had blobs of grease (still a little there) on top of the pipes that never melted. Is that also some on the muffler? Check up front by the diff seal also. Lastly, how fast have you driven since cleaning? If it was sprayed that bad at 30, that's a big leak.
 

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2,527 Posts
If this has been happening since day one It’s possible the seals were installed at the ZF factory without garter springs on their lips (human error) and that would be a simple enough fix by just replacing the seals…did you pull up and down on the axles to see if there is excessive play at the axles sealing journals? If there’s no radial movement outside of a few microns then it just may be a seal issue…if there is excessive movement, there’s your seepage/leak!…axle looseness can come from worn axle spines, worn spider gears, worn carrier bearings..either way this procedure is involved and may need the monkeys on it
 

· HOTM Winner
2020 Challenger Hellcat Redeye Wide Body
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12,744 Posts
If this has been happening since day one It’s possible the seals were installed at the ZF factory without garter springs on their lips (human error) and that would be a simple enough fix by just replacing the seals…did you pull up and down on the axles to see if there is excessive play at the axles sealing journals? If there’s no radial movement outside of a few microns then it just may be a seal issue…if there is excessive movement, there’s your seepage/leak!…axle looseness can come from worn axle spines, worn spider gears, worn carrier bearings..either way this procedure is involved and may need the monkeys on it
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66 Posts
Warranty will fix it. I have 2020 Hellcat I bought brand new in 2020 December. 17.000miles and zero issues! Only had to replace the driver rear strut mount since it was squeaking over bumps. 25$ part and was fixed under warranty. I beat the living hell out of it. Also already on my 2nd set of tires. Michelin PS4S FTW
 

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2022 GT500 Carbon Fiber Track Pack
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1,287 Posts
It doesnt look like a axle seal to me. Looks like exhaust discoloration. Look furthur up the right muffler, If it was leaking there is no way it would go towards the front of the car only rear.The CV shaft 'appears' to be dry.
Id still take it in to have it looked at.
 

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21 Camaro ZL1
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1,505 Posts
Discussion Starter · #19 ·
It doesnt look like a axle seal to me. Looks like exhaust discoloration. Look furthur up the right muffler, If it was leaking there is no way it would go towards the front of the car only rear.The CV shaft 'appears' to be dry.
Id still take it in to have it looked at.
Well I wiped it off with brake clean like 1000 miles ago. It all came back and its sticky. But its baked to the exhaust. You can see it running back along the bottom of the pipe. The exhaust actuator is soaked in it and the boots are covered it in as well. They are soaked in this sticky brown liquid. Looks like gear oil. The axle boot grease is like gray almost black. Thats not this.
 

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2022 GT500 Carbon Fiber Track Pack
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1,287 Posts
Well I wiped it off with brake clean like 1000 miles ago. It all came back and its sticky. But its baked to the exhaust. You can see it running back along the bottom of the pipe. The exhaust actuator is soaked in it and the boots are covered it in as well. They are soaked in this sticky brown liquid. Looks like gear oil. The axle boot grease is like gray almost black. Thats not this.
just make an appt and take it in. If there is an issue have it documented and fixed.
 
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