The brake oil on my 2009 rrs drops quite quickly considering it's not doing much in the way of mileage and so not wearing down the brake pads much. No leaks can be found externally but my brother in law mechanic said that sometimes the oil can pass through the master cylinder into the servo but before stripping it down he said to ask about it on here. Can this be the usual cause of dropping brake oil levels when there are no signs of oil leakage on my drive ?
Cheers. ste777

engine oil can sometimes be found in the servo.

If your brake fluid is dropping, double check under the rear of the car, as the pipes do go