Brake master cylinder

[Mcbudge]

I was noseying under the dash earlier and noticed I had a small drip coming from the white cap in the picture. I’m assuming it’s brake fluid and it’s coming from the master cylinder. Before I order a cylinder and go about replacing it, can anyone suggest anything else to check first / anything else it could be?
Any advice would be appreciated!

 

[Usr117063]

Thats a long way for the brake fluid to travel. Check in the engine bay if theres fluid on the servo, will corrode the paint around and underneath the mc

 

[Mcbudge]

Does the shaft in the MC not protrude through into the cabin? I’ll try and get a light down behind the engine tomorrow and see if I can see anything!

 

[Usr117063]

No its like this

 

[Mcbudge]

Oh so the servo comes through the bulkhead. in that case, if it isn’t brake fluid what is it likely to be?