(05-05-19, 01:04 PM)Dynspud link Wrote: I have to comment that I think adding new fluid into the existing fluid in the reservoir is not best practice.
You are effectively contaminating the new stuff with the old stuff that is still in there.
I always syphon out as much of the old fluid from the reservoir as I can, before topping up with new fluid for the first time, to avoid contaminating it as much as possible.
You clearly didn't watch the link I posted, which shows the fluid being removed from the res then being topped up before opening the bleed screws & then expelling old from the calipers/ pipework so I really don't see your point of your post which both comments you make equal the same outcome if your worried about contaminating new fluid, as old will still be in system whether you empty the res or not? as the idea is flushing old out of system which is a darker colour until fresh is visible in the tubing.[img alt=Wink]http://foc-u.co.uk/Smileys/efocicon/wink.gif[/img]