Do You/Should You Lose Any Coolant? - Porsche Macan Forum
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post #1 of 22 (permalink) Old 07-18-2019, 12:42 AM Thread Starter
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Default Do You/Should You Lose Any Coolant?

Not talking about getting the low coolant warning every month or so which obviously is some type of leak.

How many of you notice the level decrease & must be topped off to be at the Max line.

Also, if you top it off yourself, what do you use & where do you purchase it?

Mine usually sits ˝ way between Max & Min right on that thick seam.

Every time my car is into Porsche service for oil change or warranty work they top it off back to Max.

The next time I check, whether a few weeks or months later, it is always back to that thick seam again.

IDK if I did nothing for a year if I would actually get to MIN or below, & get the warning.


I stopped by Porsche & asked the service tech about that & he said, despite what you read on various forums about the system being a closed system & should never lose any coolant…that is NOT his experience. He says he has to top off virtually every Macan’s coolant. Says it is normal.
If there was a leak would probably see it around the cap or the overflow container.

I think a coolant leak can be anywhere in the coolant system. Including places not visible by just opening the hood & looking at the overflow reservoir.

I want them to check for leaks & do a pressure test when I bring it in for an oil change but, think they may not, given these symptoms. They may just say they see no sign of a coolant leak when they remove belly pan to do the oil/filter change. I doubt they would tell me they did a pressure test, if they did not but, IDK.



So does your coolant level stay @ Max?

Maybe we can have a poll?

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post #2 of 22 (permalink) Old 07-18-2019, 06:15 AM
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That sounds strange to always have to top off I haven't heard of that before. Im going to peak at mine soon and keep an eye on it.

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post #3 of 22 (permalink) Old 07-18-2019, 07:25 AM
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I’v had the same thing and my car passed the pressure test. It doesn’t seem to drop below minimum.
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post #4 of 22 (permalink) Old 07-18-2019, 01:00 PM
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Had the same issue few times when the coolant light came on. The dealership did a pressure test and everything was normal, they changed the cap just in case. The tech advised me that it's very common in the Macans and the issue I had could also be related not to properly bleeding out all the air when the coolant was replaced during the service.

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post #5 of 22 (permalink) Old 07-18-2019, 07:11 PM
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The level will be sensitive to temperature (air and engine) which will cause a fluctuation too. A small leak onto a hot engine part could show no signs other than a white crust. Air in a new system or recently changed system could also cause a little variation . I don t see how adding a lot often could be normal. I mean where is it going then? If you are only adding an ounce or so every 10K I would not be concerned.
I ll check mine as I just got the car.

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post #6 of 22 (permalink) Old 07-18-2019, 10:10 PM
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All the cars I have owned so far, including Macan, never one needed regular coolant top off. Occasional top off is normal though.

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post #7 of 22 (permalink) Old 07-19-2019, 12:56 PM
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I am pretty sensitive to the smell of coolant, and have caught a faint whiff from my Turbo. Dealer pressure tested and found no issues. Would be nice to know more about this.
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post #8 of 22 (permalink) Old 07-19-2019, 08:01 PM
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Maybe the water pump is faulty and leaks coolant from the weep hole? I believe this would not show up in a pressure test.
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post #9 of 22 (permalink) Old 07-19-2019, 08:05 PM
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I had a whiff in my Turbo as well. First time on for the AC this season.....seems to be gone now...normal ?


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post #10 of 22 (permalink) Old 07-19-2019, 11:16 PM
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Quote:
Originally Posted by Teddis View Post
I had a whiff in my Turbo as well. First time on for the AC this season.....seems to be gone now...normal ?


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Smelling coolant in the cabin is normal? That’s kind of odd. Especially if you have a baby in the car.
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