Dark Brake Fluid
Thread Starter
MBWorld Fanatic!
Joined: Jul 2005
Posts: 7,424
Likes: 3
From: New York City
C55 ///AMG, 535xi
Dark Brake Fluid
Hey guys, I got an issue, I was taking a look to see if I have enough brake fluid and I noticed that my brake fluid was very dark (greyish) and I know that the brake fluid is a clear yellowish orange, I'm gonna make an appointment for service but was wondering if anyone knew whats going on? The coupe seems to give me a lot of black liquids lately 
the engine oil was black, the brake fluids black
the engine oil was black, the brake fluids black
Super Member
Joined: Apr 2005
Posts: 538
Likes: 1
From: White Lake, MI
04 C320 Coupe MT
You need to change it right away! Brake fluid absorbs moisture, which is by design. As it does, it gets darker in color. There are two problems with brake fluid that has a lot of moisture in it - the boiling point of the fluid is lowered a lot, and the internal components of the hydraulic unit can be damaged from the moisture.
When the owner's manual says that it should be changed every two years, they aren't joking!
When the owner's manual says that it should be changed every two years, they aren't joking!
Thread Starter
MBWorld Fanatic!
Joined: Jul 2005
Posts: 7,424
Likes: 3
From: New York City
C55 ///AMG, 535xi
yeah I just made a service appointment this morning, but its in 3 weeks, sucks.... they said "we forgot to change it" for the last time i went into service
MBWorld Fanatic!
Joined: Feb 2005
Posts: 5,761
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From: North Carolina
98 Black C43 , 12’ ML 350 Blutec
Originally Posted by advans
yeah I just made a service appointment this morning, but its in 3 weeks, sucks.... they said "we forgot to change it" for the last time i went into service
