How much brake fluid..

[bmh.01]

Do you need to flush the braking system on a 172? Looking to get some castrol response dot4 stuff and want to make sure I flush all the old stuff out.

A litre bet enough or would I need 2?

 

[Fred@BTM]

1L is bang on

DO NOT DRAIN THE SYSTEM!!! just bleed it through

 

[bmh.01]

Was planning on bleeding it through, wouldn't drain it in a million years! Thats a whole new world of pain!

So 1l is enough to keep topping up and pump it through all round yeah?

 

[edde]

Was planning on bleeding it through, wouldn't drain it in a million years! Thats a whole new world of pain!

So 1l is enough to keep topping up and pump it through all round yeah?

Yep should be fine.
I;'d always buy 2 liters for a full complete drain.