I found something unacceptable in the = Bentley manual.

It starts to talk about bleeding the = coolant system and stops in half way when starts mentioning another way to do it.  = Now I am not certain of either.  This is on page 19.16 and just when = explains the bleeder screw's positions it ends there and starts explaining the other = mode, not finishing the first.

Any sole out there knows?  Maybe both?

Zoltan