Brake fluid

Bugmaster · 03-07-16, 05:42 PM

Hi All

Could anybody recommend a good brake fluid for an RR ur quattro please?

I seem to of had a tiny drop in fluid, I hope it's not the master cylinder,

the clutch pedal is still returning to its starting position with no issues.

Does the fluid evaporate over time etc??

Many thanks

Regards

John. · 03-07-16, 05:55 PM

DOT 4 Any brand would do IMHO.

Bugmaster · 03-07-16, 07:25 PM

Quote:

Originally Posted by John.

DOT 4 Any brand would do IMHO.

Many thanks John

Regards

jimh · 03-07-16, 11:03 PM

A small drop in brake fluid level over time is normal as the pistons will move out further as the pads wear, meaning the calipers hold more of the fluid.
The difference between max & min on the reservoir roughly equates to the difference between new and worn out pads / discs.
Is it noticeably dropping still, or have you just noticed a small drop over a longer period of time / miles?

If it's just dropping due to pad wear and you top it up, and whoever changes the pads / discs does not think to empty the reservoir before they push the caliper pistons back, it'll spill over.

03-07-16, 05:55 PM	#2
John. 4 ring whore! Classic Audi Club Member Join Date: Mar 2011 Location: Scottish Borders. Posts: 7,520	DOT 4 Any brand would do IMHO.

03-07-16, 11:03 PM	#4
jimh Grown up member Classic Audi Club Member Join Date: Dec 2008 Posts: 122	A small drop in brake fluid level over time is normal as the pistons will move out further as the pads wear, meaning the calipers hold more of the fluid. The difference between max & min on the reservoir roughly equates to the difference between new and worn out pads / discs. Is it noticeably dropping still, or have you just noticed a small drop over a longer period of time / miles? If it's just dropping due to pad wear and you top it up, and whoever changes the pads / discs does not think to empty the reservoir before they push the caliper pistons back, it'll spill over.