Re: How is the best way to purge brake lines

BSAKing@[EMAIL PROTECTED]
 wrote:
> I have to do a brake job on old Betsy and need to totally change the
> brake fuid at the same time.
> 
> Is it best to totally drain the system, do repairs and then re-fill
> eveything?
> 
> Or just undo what I have to and block the flow and then fill and bleed
> until it is all done?
> 
> Or does it make any difference?
> 
> If it will not affect or cause issues, number 1 would be best I think
> as I have to replace brake caliper seals in all 4 wheels. And I do
> want to totally change the fluid as it has been years since it was
> done - like 20 or so....
> 
> TIA...

Depends on the vehicle.