This antifreeze tester measures the freeze protection of propylene glycol-based coolant in automotive radiators down to -50°F. It utilizes a ball float system to provide readings for both hot and cold fluids, allowing for immediate testing regardless of engine temperature. For convenient transport, the tester includes a pocket protector to prevent leaks and damage during storage.

This antifreeze tester measures the freeze protection of propylene glycol-based coolant in automotive radiators down to -50°F. It utilizes a ball float system to provide readings for both hot and cold fluids, allowing for immediate testing regardless of engine temperature. For convenient transport, the tester includes a pocket protector to prevent leaks and damage during storage.