Replacing brake fluid - how much is required?

[Lincsls1]

As the title really, looking to replace the brake fluid in my car, the brake calipers are quite large by normal standards.
How much fluid do we think I'll need to achieve this, and roughly how many pedal pumps per corner?
Cheers...

[Dave.]

14 metric quarter gallon squared.

HTH

[Matt_E_Mulsion]

As many pumps as it takes for the fluid to start coming out clean. I always buy a litre bottle and then you know you've got more than enough and can go round twice if you wish.

[Chris32345]

1l should be more then enough for most cars and for the price of it it's hardly worth saving money with a 500 ml bottle

[E-bmw]

Although the system is likely to hold under 1 litre, for the price of the stuff I always get 2 litres for a full system refresh just to be certain of having plenty.

Better be looking at it than looking for it in my opinion.

As for number of pumps, depends on too much to say.

I will normally syringe the reservoir dry fill it & run that through each rear caliper twice, then one full reservoir through the 2 fronts, then fill the reservoir & check the pedal for any air.

[Lincsls1]

E-bmw said:

Although the system is likely to hold under 1 litre, for the price of the stuff I always get 2 litres for a full system refresh just to be certain of having plenty.

Better be looking at it than looking for it in my opinion.

As for number of pumps, depends on too much to say.

I will normally syringe the reservoir dry fill it & run that through each rear caliper twice, then one full reservoir through the 2 fronts, then fill the reservoir & check the pedal for any air.

Brilliant. Thank you.

[Matt_E_Mulsion]

E-bmw said:

I will normally syringe the reservoir dry fill it & run that through...

Pretty much exactly how I start too. That way you are not fighting half a reservoir of old and new fluid.

[Chris32345]

If the fluid is a few years old you will likely see a good colour change between the old and new fluid