Posted by Glen of Idaho [199.27.128.105] on Monday, October 03, 2016 at 11:33:22 :
In Reply to: Antifreeze tester posted by Sherman in Idaho [108.162.246.24] on Monday, October 03, 2016 at 03:18:14 :
Ran into the same thing last fall with the floating ball type tester. Checked all of the testers after that and found three bad ones and one was new. Got two new ones that use 5 1/2" disks if the fifth disk is floating it indicates that solution is to strong and not protecting from freezing.