Oh, also, I have a slow coolant leak in the 95. Ever since it started, I have been getting the gurgling as well. I know some systems have an air purging process. Haven't dug into ours yet as I need to deal with the source of the leak first. I thought though that our t-stats with the hole-flapper-thingy was supposed to vent the air back to the rad to circulate it out...?

Big Truck: 00, 3.5, Endeavor, 5-Spd drive line in hand!
Little Truck: 87, 2.6T I/C, MT, LSDs, Tonneau Top
Her Truck: 03, 3.8, 20th Anniv, 65k
Daughter's: 06 Eclipse, Keeping it Mitsu!
FSMs: MitsubishiLinks.com