M105X, Brakes losing fluid, no leaks

[Cam]

On a M105X, it is losing fluid. I have checked all the lines and can't find any leaks. Someone has told me that it is a O-ring or seal in side the rear end that will start leaking, letting fluid leak in to the rear end. Has anyone else had this issue? Thanks in advance.

 

[Tx Jim]

On a M105X, it is losing fluid. I have checked all the lines and can't find any leaks. Someone has told me that it is a O-ring or seal in side the rear end that will start leaking, letting fluid leak in to the rear end. Has anyone else had this issue? Thanks in advance.

I think whomever told you about the internal leak is correct.

 

[Mikec575]

I think whomever told you about the internal leak is correct.

On a M105X, it is losing fluid. I have checked all the lines and can't find any leaks. Someone has told me that it is a O-ring or seal in side the rear end that will start leaking, letting fluid leak in to the rear end. Has anyone else had this issue? Thanks in advance.

Cam what did you find out on your leak? I’m