Originally posted by steve125
I had been running a 50/50 mix of antifreeze and water when it gets cold or in the summer just water and Water Weter. In either case i was getting a bit of cooant loss out of the overflow.
I too was having overflow problems in my 426 in extreme conditions. I was running 50/50 mix of ethylene glycol and water. I then switched to straight distilled water with Water Wetter. Still had overflow problems. I then went to 75% distilled water, 25% ethylene glycol and Water Wetter(per old#48's instructions) and have not boiled over once since. Give it a shot Steve. :)