W212 AMG Discuss the W212 AMG's such as the E63

M157 Stock Heat exchanger fluid level

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Old Jan 16, 2021 | 11:36 AM
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M157 Stock Heat exchanger fluid level

My HX fluid looks low. There are no lines on the side of the tank.
Just searched the manual and the internet, couldn't find any results.
anyone know the proper level for the fluid?


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Old Jan 16, 2021 | 04:03 PM
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When it is cool, there is a + mark inside the tank when you remove the cap , fluid has to be above or level with this, considered full.
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Old Jan 16, 2021 | 05:30 PM
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Thanks, mine was just below that, I added like 3oz lol.
Probably didnt matter much
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Old Jan 17, 2021 | 06:06 AM
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Originally Posted by kenneyd
Thanks, mine was just below that, I added like 3oz lol.
Probably didnt matter much
you can fill it to the top. Eventually when pressure rises it’ll blow them from the cap. I believe the cap got a safety valve built into it.
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