Where's my brake fluid gone?

[richardfm]

Aye, fluid can sometimes leak into the servo. Rare though.

Or if it had a hydraulic clutch it can leak from the slave cylinder and, dependent on where that is mounted, may not show immediately.

You'd have known if there was a "big air gap" anywhere, besause the brakes wouldn't have worked well, possibly losing one circuit entirely. It just doesn't work like that.

Also, it wouldn't have taken 700ml to replace the air

 

[neil_merseyside]

It's 3/4 of a bottle of fluid or 3/4 of a litre of fluid, brake fluid tins used to be small as you can't keep it 'fresh' so no point in being overlarge. Servo I reckon too

 

[Electric_Andy]

It was the small bottles, so probably around 1 L in the past year or so. I will get the garage to check the servo. Thanks all

 

[CXRAndy]

It's the only place on the vehicle where you can store over a litre of liquid and not be seen. If the car has been thoroughly looked over for leaks and nothing could be found, where else could the fluid go. It doesn't evaporate that quickly