Anti-Freeze Tester-Disc Type

Reliable coolant testing tool for year-round vehicle maintenance. This disc-type tester delivers accurate readings whether your coolant is hot or cold, eliminating guesswork during seasonal checks. Dual-scale protection markings in both Fahrenheit and Celsius make interpretation straightforward. The sixth disc uniquely identifies overprotection conditions that reduce cooling efficiency—helping you maintain optimal engine performance. Essential for mechanics and fleet operators. Note: Not compatible with propylene glycol-based coolants.