Reply to "Pantera Cooling System"

When I purchased my car, the former owner told me that the rearmost (toward the back of the car) bottle should be full when the engine is cold, then open the bleeder on the rad until some fluid show ups, close it off, top up the bottle and it's set. Then open the bottle behind it - closer to the cabin (overflow bottle) and make sure it has about 5" of fluid in it (1/3 full). That's worked fine for me in the northern climate, I've driven in 35C weather a few times here and it's never gone over about 180.

I'm using a 50/50 water/antifreeze mix. I'll defer to the gurus on whether having both tanks full and full of just water maybe the cause of the bubbling over.