Tony,
I hear you......I read the threads you'd posted and understood most of it. I'm assuming the Valvoline
Synthetic is OK as it doesn't mention that is has silicon in it, but can't say for sure.
I'm trying to decide if I should just replace the master cylinder as well and just go with refreshing the whole system now. Bummer is my dad is in town and I wanted to take him for a ride, but doesn't look like I'll get anything sorted out before he leaves tomorrow.
All I seem to be able to confirm is that air continues to be pulled into the system somewhere. I'm going to fiddle with the connections tomorrow and try to seal up the threads real good and see if that works. If not, then I'll probably get the new master cylinder on Monday and go from there.
Let me know if you come across any miracles!
Thanks!
Scott