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Twilliams 2018 launch model 400 miles. After stopping and parking I noticed a drip( water) coming from an opening on muffler. Is that normal! Thanks in advance.
 

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Its very normal, normal enough that a lot of other cars do the same thing. Next time you're driving in traffic observe what's happening with other cars.
 

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I also noticed that. The water is not coming out of the exhaust pipes but rather from the muffler itself, as if water had formed over it, similar to the A/C unit.
I find it strange and potentialy harmful for the muffler (corrosion, rust...)
 

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Welcome to the forum!

Yes, it is normal. Because exhaust systems get quite hot, they will, when they are cooling down cause some moisture to collect in your muffler and your pipes and then it will drip out.
 

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Welcome to the forum!

Yes, it is normal. Because exhaust systems get quite hot, they will, when they are cooling down cause some moisture to collect in your muffler and your pipes and then it will drip out.
Adding to that you will often also hear a ticking sound especially after driving for a long time or just after driving hard.

When people hear the ticking and see the drops happening and even smell something that seems connected with it, concerns start to flow.
 

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Similar water drip issue but mine drips off bottom of gas tank (not gas...I've smelled it) and continues for hours after car shut off. Never had this on any other car. Not sure if dealer needs to review. Thoughts anyone? Thanks JT
 

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Verified with dealership that this is a drain hole. It leaks especially after short trips where the muffler doesn’t heat up enough to evaporate the water. I thought a rock (etc) had punctured it. If you crawl under you’ll see it.
 

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Yes it’s 100% normal and correct. Gasoline’s byproduct conversion is h20. Water. So after burning off in the engine and exhaust it’s a secondary conversion. Been happening since the 1st car was made decades ago. Totally normal. You can gauge your fuel quality by the water drip point. More water = lower quality , less water = higher quality. It’s the octane burn off rate.
 

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I live in Edmonton, Alberta and this winter temperatures were very cold in January and February - cold air would enter my garage under the door enough to freeze the water dripping from the muffler. A mound of ice about 10" high built up in my garage directly under the water drip. I am aware that water is a byproduct of gasoline combustion but I have never had another vehicle with this ice buildup. I used to have a 2012 Volvo XC60 that I parked in the exact same spot and never had any ice build up. I took the Atlas into the dealer for my first oil change at 8000 km in early March and told them about the ice buildup. They said they checked the other Atlases they had in stock and they all had the weep hole in the bottom of the muffler. The tech wrote in the diagnosis that the problem was not getting the engine revs high enough pressure to blow out the water buildup in the muffler. He suggested that I needed to get the motor up to 6000 rpm to do that (seems ridiculous).
 
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