in tank return hose?

[cdm]

Doesnt matter as far as air; its the intake that is important to always be under water. If its aerating, it isnt bled proper. With the german hydro fluid you have to stop it and let air bleed out of the oil. You cant bleed the system while its running as the air doesn't really leave fast, so you just keep sucking it in and over constantly.

So start pump, move a cyl, stop. let the foam go away. repeat until no more foam. Took me a good 30 minutes last time i did it to get it clear